Microsoft has released its final non-security preview update of 2025, delivering a bifurcated feature set that widens the gap between standard Windows 11 installations and Neural Processing Unit (NPU) equipped hardware.
Arriving ahead of the holiday freeze, the “Week D” update (KB5070311) introduces a native “Virtual Workspaces” toggle for managing isolated environments and expands the Xbox Full Screen Experience (FSE) to a broader range of gaming handhelds.
While standard users gain structural refinements, Copilot+ PCs receive exclusive AI-driven tools, including a new “Agent in Settings” powered by local small language models to automate system configuration.
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The Copilot+ Divide: Exclusive AI Tooling
Defining the strategic direction for late 2025, Microsoft has effectively split the Windows 11 experience. Standard installations receive necessary structural maintenance, but functional expansion is increasingly reserved for hardware capable of local AI inference.
Leading this shift is the “Agent in Settings,” a proactive assistance layer designed to interpret user intent without the latency of cloud processing. Powered by the ‘Mu’ small language model, which uses 330 million parameters, this agent runs directly on the NPU to offer inline fixes and configuration suggestions.
Unlike previous iterations that relied on passive indexing, the new system actively monitors user activity to surface relevant controls. Official documentation confirms the shift, noting that “the search results menu displays more available results, making it easier to quickly find and modify your settings. A scroll bar lets you view all search results.”
This represents a fundamental change from the static search bars of earlier OS versions, moving towards an interface that anticipates user needs rather than simply responding to queries.
Further enhancing the Copilot+ ecosystem, Microsoft has streamlined the “Click to Do” context menu. The updated interface simplifies navigation by consolidating actions and introduces auto-triggering capabilities when large images or tables are detected on screen.
Peripheral support also sees a significant upgrade. Breaking the previous hardware lock, the OS now extends AI-powered camera enhancements to external devices. As noted in the release documentation, “you can now use Windows Studio Effects… on an additional camera such as a USB webcam or your laptop’s built-in rear camera.”
This allows users with high-end USB webcams to leverage background blur, eye contact correction, and auto-framing features previously restricted to integrated sensors.
Under the hood, the update bumps core AI components – including Image Search, Content Extraction, and Semantic Analysis – to version 1.2511.1196.0, according to the official release notes. These improvements enable new capabilities like Semantic Search in Photos, allowing users to find locally stored images using natural language descriptions rather than file names or dates.
Core Architecture: Virtualization and System Management
Beyond AI exclusives, the update introduces essential tools for system administrators and power users. A new “Virtual Workspaces” toggle has been added to Advanced Settings, centralizing the management of isolated environments.
According to the official release notes:
“You can now turn on Virtual Workspaces in Advanced Settings. Virtual Workspaces allow you to enable or disable virtual environments such as Hyper-V and Windows Sandbox.”
To access Virtual Workspaces, users can go to Settings > Systems > Advanced.
This addition simplifies the workflow for IT professionals who previously had to navigate legacy Control Panel applets or PowerShell commands to configure Hyper-V and Windows Sandbox. By surfacing these controls in the modern Settings app, Microsoft is reducing the friction associated with maintaining secure testing environments.
Regarding the scope of these changes, the release notes state that “Virtual Workspaces allow you to enable or disable virtual environments such as Hyper-V and Windows Sandbox.”
This aligns with broader efforts to modernize the Windows management stack, including the recent move to make System Monitor (Sysmon) integration a native component rather than a separate download.
In a parallel development, the company is testing the decoupling app updates from the Microsoft Store client. This architectural shift allows essential system applications to receive updates independently, addressing a long-standing pain point for enterprise environments where the Store is often blocked by policy.
File Explorer also receives a notable overhaul aimed at visual consistency. Addressing long-standing user complaints, the update fixes UI glitches in Dark Mode, ensuring that dialogs, progress bars, and confirmation windows align correctly with the system theme.
Additionally, the context menu has been simplified to reduce clutter, consolidating rarely used commands to streamline file operations.
Handheld Gaming: Chasing the SteamOS Standard
Acknowledging the growing market for portable Windows gaming devices, Microsoft aims to unify the interface across a disparate hardware ecosystem.
The official release notes confirm that “the full screen experience (FSE) is now available on more Windows 11 handheld devices”
FSE gives you a console-style interface with the Xbox app, making handheld gaming clean and distraction-free.
While this expansion brings a welcome console-style interface to more hardware, the implementation remains a shell overlay rather than a kernel-level integration. Unlike SteamOS, which manages power states at the hardware level, FSE relies on minimizing background tasks to reclaim RAM for gaming performance.
The update also addresses specific hardware compatibility issues, including a fix for “unsupported graphics card” false positives that prevented certain titles from launching on supported configurations.
Game Pass integration has been deepened, with updated branding and benefit visibility now embedded directly into the Settings app.
Release Cadence and Known Issues
Marking the end of the 2025 non-security preview cycle, this “Week D” release arrives just before Microsoft’s annual operations freeze.
Microsoft’s release documentation explains the scheduling anomaly:
“This non-security update for Windows 11, version 25H2 and 24H2 (KB5070311), improves functionality, performance, and reliability.”
“Preview Update KB5070311 will upgrade Windows 11 versions 24H2 and 25H2 to builds 26100.7309 and 26200.7309, respectively.”
“Due to reduced operations during the Western holidays in December and New Year’s Day, Microsoft will not release a non-security preview update in December 2025.”
This operational pause is standard procedure for Redmond, aimed at preventing deployment issues when support staff levels are reduced. Consequently, IT administrators can expect a stable, if static, environment through the end of the year.
This schedule disruption means that no further optional updates will be released until January 2026, leaving any unresolved bugs to persist through the holiday season.
Notably absent from the official highlights is the promised the new Agenda View, which was previously confirmed for a December preview. This feature, designed to restore calendar event visibility to the taskbar, appears to have missed the cutoff for this release.
The long-term efficacy of the ‘Mu’ model integration or the omission of the Agenda View is unclear at this point. Users should also be aware of a specific UI glitch affecting the file manager:
“After installing KB5070311, you might experience issues when opening File Explorer in dark mode. The window might briefly display a blank white screen before loading files and folders.”
Another known issue involves the lock screen, where the password icon may become invisible, requiring users to click the empty space to reveal the input field. Deployment of these features will follow a phased approach, with availability gradually expanding to all eligible devices before the next mandatory security update.