16 major new features in Windows 11's December update

The latest major December update for Windows 11 comes packed with changes, and this time, we're not just talking about invisible patches. Microsoft has prepared a package with at least 16 visible new features that touch on the interface, performance, AI functions and even the way you manage your mobile devices and advanced tools like virtualization spaces.

This release coincides with the last Patch Tuesday of the year, so it brings together the best (and worst) of Windows updates: Security fixes, new features, and the occasional annoying bug which is already generating buzz. If you use Windows 11 daily, you should know that know everything that changesWhat real improvements does it offer, and what problems are emerging, will help you decide if it's worth installing the patch as soon as it's released? Windows Update.

When does the December update arrive and how is it distributed?

Microsoft has scheduled this review as the Latest major Patch Tuesday release for Windows 11 of the year, with initial rollout on Tuesday, December 9, 2025. This means that the update is delivered alongside the monthly security patch, which always guarantees wide distribution… although not everyone will see it on the same day.

The company uses a system called CFR (Controlled Feature Rollout)This essentially rolls out new features gradually. Even if your team downloads the security patch, some features may take days or weeks to activate. This is a way to minimize risk: if something goes wrong, the rollout is stopped before it affects all users.

That's why it's quite common to check Windows Update and not see anything new while reading news about the update. It doesn't mean your PC has been left out.You're simply in a later phase of the rollout, and normally the update will arrive on its own without you having to do anything special.

It's worth remembering that, in addition to the visible features, the package includes Minor bug fixes and small internal adjustments which Microsoft doesn't detail down to the last detail. Many are background changes that refine the overall performance and stability of the system.

Visual improvements: search, Start menu, and true dark mode

One of the first fronts that Microsoft wanted to close is that of the Visual inconsistency between the Start menu and Windows SearchUntil now, the search panel had a different height, strange animations, and an appearance that didn't quite fit with the overall design of Windows 11.

With the new update, the search box has adjusted to match its size and proportions to the Start menuThis eliminates the "jumping" effect that appeared when opening search from the taskbar and helps both experiences feel seamless. Additionally, new animations have been added to the taskbar to make transitions smoother when switching between apps or opening floating panels.

The effort is most noticeable in dark mode. For years, users have complained that Windows 11's dark theme was half-cooked, with dialog boxes and menus still in light colorThis update finally extends dark mode coverage to a large part of the File Explorer interface.

Now, when you copy, move, or delete files, dialog boxes, progress bars, and confirmation windows... They correctly respect the dark mode configured in the systemThis provides a much more cohesive look, especially if you spend many hours in front of the screen and prefer an environment that is as easy on the eyes as possible.

However, there are nuances: some recent builds have reported white flashes when the Explorer is opened in dark modeThe issue involves brief flickers when opening new tabs, switching sections, or viewing copy progress. Microsoft acknowledges the bug and is working on a fix, but it may still occur on some computers, which is particularly annoying for those sensitive to sudden changes in brightness.

File Explorer, Widgets and Taskbar: Small tweaks that make a difference

Beyond dark mode, File Explorer receives a set of tweaks that, while not revolutionary, They improve the feeling of coherence and modernity.The idea is that any interaction with dialog or confirmation windows maintains the same Fluent visual style, with fewer jumps between old and new styles.

The taskbar is also being strengthened as an intelligent control center. Starting with this update, you'll see a new action called “Share with Copilot” in the app thumbnailTapping it will generate a view of the app in use and send it to Copilot to start a conversation based on that content using Copilot Vision, allowing you to request summaries, explanations, or contextual actions without having to copy and paste by hand.

If you're someone who uses widgets a lot, you'll find a completely redesigned and more organized panelThe Discover section (the news and recommended content section) is clearly separated from the custom widgets area, avoiding the confusing mix of information cards and headlines that existed before.

In addition, the widget board incorporates a More consistent design, better identifiable notification icons and a structure that makes it easy to see at a glance what kind of information comes from each source. Microsoft wants the dashboard to stop being a "catch-all" and become a space you actually want to have open.

Another small but very welcome change affects the drag tray. This panel appears when you drag files to the top of the screen. quickly share with other devices or nearby contactsOn paper it was a useful feature, but for many users it has become a constant nuisance.

After the December patch, you can Disable Drag Tray from Settings > System > Nearby SharingIf all you want is to move a file within the Desktop without extra panels popping up, this change will simplify your life considerably.

Updated settings: Device information, mobiles, and more controls

The Settings app is receiving another round of improvements designed to you don't have to dive into hidden menus in the Control PanelThe most visible new feature is a card called “Device Information” that appears directly on the Settings home page.

From this box you can immediately see key team data such as processor, RAM, storage or graphics cardwithout having to open extra tabs or search through the old "About Your PC" page. This card is designed for users who want to check at a glance whether their computer meets certain requirements or is compatible with a particular application or game.

The “About” page is also redesigned with a clearer layout, new sections, and More information related to the device's storage and capabilitiesThe goal is to give you a complete record of your PC in one place, instead of scattered and outdated information.

One of Microsoft's major focuses in Windows 11 is mobile integration. With this update, a new feature appears. New "Mobile Devices" menu within Settings > Bluetooth & devicesFrom there you can add new terminals, manage those that are already linked, and revoke access if a device is no longer in use.

This centralization avoids having multiple different applications for each type of connection and makes it Managing mobile phones, tablets, and other connected devices becomes much more straightforward.For those who use the PC as a work hub among several devices, the change is especially convenient.

Even seemingly minor options, like keyboard, mouse, or stylus settings, benefit from improvements. You'll find this in Settings > Bluetooth & devices > Keyboard. Advanced controls for delay and repetition rate, the assignment of the new Copilot key present on many recent keyboards and the ability to choose whether the Print Screen key directly opens the Snipping Tool app.

If you use a digital pen on touchscreens, you can now configure haptic feedbackYou can choose what kind of vibration you want for writing, pressing buttons, or drawing. This physical feedback gives the pen a more realistic feel, bringing it closer to the experience of writing on paper.

Virtual workspaces and hotpatch: improvements for advanced users and businesses

The December update hasn't forgotten the more technical users. A new section has appeared called “Virtual workspaces” within Advanced Settings, which centralizes all the virtualization functions that were previously lost in the classic Windows Features menu.

From this new section you can manage options such as Windows Sandbox, Hyper-V, the Virtual Machine Platform, or Secure Containers without having to activate them one by one using outdated tools. This greatly simplifies things for administrators, developers, and users who set up test environments on their machines.

In the business environment, the most striking new feature comes from the 24H2 version of Windows 11 for Enterprise customers, which introduces the hotpatch for client equipmentUntil now, these techniques were more common on servers, but Microsoft is starting to extend them to workstations.

The hotpatch allows you to apply Security updates without needing to immediately restart the computerThe patches are loaded into memory and replace parts of the system on the fly, significantly reducing the number of reboots associated with traditional patch Tuesdays.

Among the benefits that Microsoft highlights are a greater availability of equipment, smaller upgrade packages that download and install faster and have simpler orchestration when using Windows Autopatch for manage PC fleets.

The official calendar already includes hotpatch for the 2024.11B and 2024.12B cycles, indicating that This type of patching will gain traction in the coming monthsFor companies with hundreds or thousands of computers, every restart less is work time that remains available.

Windows Spotlight, Xbox Full Screen Experience, and gaming enhancements

The update also enhances the more visual and playful aspects of the system. Windows Spotlight, the feature that automatically changes the wallpaper and the lock screen dailyIt incorporates new quick interactions right from the Desktop.

Now you can right-click on the background and access options such as “Change background” or “Explore background”These features allow you to rotate the image without going into Settings or opening additional information about the photo you're viewing. This encourages you to use Spotlight as a dynamic carousel, not just something that's "there in the background."

For gamers, and especially for those who use devices portable console-style, the update extends the Xbox Full Screen Experience (FSE)This full-screen interface, which gave the desktop a console-like appearance and was limited to specific models such as the ASUS ROG Ally and Ally X, is now being opened up to more devices, including regular PCs.

When you activate this mode from Settings > Gaming and enable the option “Full screen experience”The system features a controller-optimized interface, uses less memory, and is designed to let you jump straight into your games and multimedia apps. It doesn't come activated by default; you have to turn it on manually, but it's a good option if you use your PC connected to the TV or as a gaming center.

In addition, some devices with touch capability and stylus receive haptic feedback specific to gaming and drawing scenariosmaking every tap or stroke feel physical. This, combined with the overall improvement to dark mode and animations, results in a more polished experience, even for leisure.

Copilot and Copilot+ PCs: New features… and more criticism

2025 has been a difficult year for the image of Windows 11. Many users and experts believe that Microsoft has become obsessed with Copilot and AIneglecting basic errors and stability issues. Even former employees like Dave Plummer, creator of the Task ManagerThey have openly asked to halt new developments and focus solely on fixing bugs.

Despite these criticisms, the December update continues to strongly promote Copilot integration. The option “Share with Copilot” in the taskbar It's the most visible aspect, but not the only one. On PCs labeled as Copilot+, a new "Click to Run" context menu is introduced that groups actions such as open, save, copy, or share around content that can then be interpreted by AI. It's not surprising that many believe that Windows 11 stumbles again between new features and stability.

The scope of Windows Studio Effects, the suite of camera enhancements powered by Artificial Intelligence (auto-blur, light correction, simulated eye contact, etc.). These functions They are no longer limited to the integrated main camera and can be applied to external USB webcams and even to rear cameras of certain devices.

The integration with Copilot in the taskbar can be adjusted, and if the presence of the “Share with Copilot” option feels intrusive, It is possible to disable it from the Copilot settingsMicrosoft is trying to find a balance between enhancing its AI features and not overwhelming those who just want a stable and predictable system.

The problems the patch brings: visual bugs and questionable reliability

It's not all good news. Alongside this major update, patch KB5071142 has been released, a revision not directly related to security that, in theory, It was intended to refine details such as the consistency of dark mode.In practice, it has introduced a couple of visual glitches that are causing quite a bit of trouble.

The first is the one already mentioned White flash when opening File Explorer in dark modeEvery time you access the Explorer, open new tabs, switch between sidebars, or check the progress of a copy operation, a white flash appears, completely disrupting the dark experience. Although it only lasts for a moment, its constant repetition makes it very annoying for many users.

The second problem directly affects the lock screen. When you have multiple login methods configured, a [unclear - possibly "unclear" or "unclear"] often appears. button to manually enter the passwordAfter installing KB5071142, this button disappears, even though it's still there. If you hover your mouse over the area where it should be, the floating text appears as if nothing happened, but you should be aware of this beforehand. These kinds of bugs help in understanding Why does Windows 11 break after updates? in so many teams.

This type of error reinforces the feeling that update Windows 11 It has almost become an extreme sportEach new patch seems to come with one or more bugs that, while not always critical, do erode trust in the system. For many, the joke "better not to update on day one" has gone from being a joke to a survival strategy.

Figures like Dave Plummer have gone so far as to compare the current state of Windows 11 with the era before the legendary Service Pack 2 of Windows XP, when The absolute priority had to be stabilizing the system for monthsHis recommendation to Microsoft is clear: ease off the gas pedal on new features, put the AI ​​frenzy on hold for a while, and focus on making sure the basics work as they should.

Compatibility, end of support for Windows 10, and the chaos with processors

The pressure to switch to Windows 11 is increasing because Windows 10 has officially lost its mainstream supportleaving millions of computers in a security limbo. Although Windows 11 has finally surpassed its predecessor in market share, there is still a huge number of machines that haven't made the switch.

In this context, the way Microsoft has updated its supported hardware documentation hasn't helped at all. Previously, the list of supported processors was very specific: You could search for your exact model and know instantly if it was validNow, the decision has been made to group chips by generic families and redirect the user to the manufacturer's website.

The result is a bit of chaos. For example, Entire series such as the Celeron 3000 are listed as compatiblewhen in reality only one specific model (the Celeron 3867U) meets the requirements. At the same time, exceptions like the Core i7-7820HQ from the Surface Studio 2, which Microsoft had made compatible in a special way, have disappeared from the documentation, implying that they are no longer suitable. If you have doubts about whether your CPU is compatible, consult the list of supported processors.

The striking thing is that This ambiguity is concentrated mainly in processors Intel x86While the lists dedicated to AMD and Qualcomm (ARM) continue to maintain a higher level of detail, the feeling among many users is that, just when everything should be clearer, the information has become more confusing.

In parallel, Microsoft has launched a program to Extended Security Updates (ESU) for Windows 10 Home UsersIn Europe, regulatory pressure has resulted in the first year of these additional updates being free, but it remains only a temporary lifeline: those who stay on Windows 10 are already assuming a greater security risk in the medium term.

Meanwhile, the company continues to invest heavily in its transition to ARM with the Snapdragon X processors and the Copilot+ branding, adding another layer of complexity. If the Compatibility management on the traditional x86 platform is already a labyrinthConvincing users to make the switch to new chips becomes even more difficult.

For the more technically inclined, there are still alternative ways to install Windows 11 on "unsupported" computers using third-party tools or scripts that bypass the checks. TPM and CPU. And, for those who are already fed up, Linux It is increasingly appearing as a realistic option.with more user-friendly distributions and improved game compatibility thanks to layers like Proton from Steam.

All of this makes the December update for Windows 11 a very peculiar mix: on the one hand, It introduces more than 16 new features that improve visual consistency, mobile integration, device control, gaming, and advanced business functions.On the other hand, it arrives with noticeable visual bugs, controversies surrounding hardware compatibility, and the persistent feeling that AI and Copilot continue to take up too much space on the roadmap. For those already on Windows 11 who appreciate the improvements to dark mode, widgets, Xbox Full Screen, or the new device information card, the patch makes perfect sense; for those who prioritize absolute stability and are wary of the latest bugs, waiting a few weeks before updating remains a more than reasonable strategy.