For several years, the question of a successor to Windows 11 has fueled speculation. Rumors surrounding Windows 12 have multiplied, with release dates announced and then pushed back. The situation took a turn during the Build 2026 conference, where Microsoft clarified its roadmap by taking a different approach to this scenario.
Project K2 and Microsoft’s Strategy: What Replaces Windows 12
Pavan Davuluri, head of Windows at Microsoft, stated during Build 2026 that no new numbered version of Windows is planned in the short term. The company is focusing on continuing the evolution of Windows 11 rather than on an operating system with a new number.
The real project is internally called “K2”. Several specialized sources describe this initiative as a program for deep optimization of performance, latency, and consumption of Windows 11. The goal is to transform the user experience without changing to a major version. Several analysts refer to the release date of Windows 12 on Geekfinity as now a very uncertain horizon, precisely because Microsoft has chosen a different path.
This approach is reminiscent of what Apple has been doing with macOS for years: deep annual updates without radical renumbering of the system. The difference is that Microsoft allowed ambiguity to settle in for months before making a public decision.
Recommended read : Everything You Need to Know About the Price of the Leclerc Photo Booth: Reviews and Tips for Making the Right Choice
Windows 11 25H2: The Update That Takes Center Stage
Instead of Windows 12, Microsoft announced version 25H2 of Windows 11. This update is not a major technical overhaul: it is based on the same codebase as version 24H2. The changes focus on the interface, the integration of AI-related features, and security adjustments.
A notable point: Microsoft has promised that the installation of 25H2 will be much faster than that of 24H2. For users who experienced long update times, this is a concrete signal.
Windows 10 users, whose support has ended, face a simple choice: migrate to Windows 11, or wait for a hypothetical successor whose release is no longer guaranteed in the medium term. The end of support for Windows 10 makes migration to Windows 11 more urgent than waiting for Windows 12.
ARM PCs and Nvidia Chips: The Real Breakthrough is Hardware
Microsoft’s discourse during Build 2026 places the breakthrough on the hardware side, not the software. The platform presented with Nvidia relies on ARM chips paired with Blackwell GPUs. The stated ambition is to run AI agents and advanced models directly on the workstation, without dependence on the cloud.
The specifications mentioned are telling:
- A local AI computing capacity of up to 1 petaflop on certain high-end configurations
- The ability to run very large language models locally
- An architecture designed for autonomous AI agents, capable of executing complex tasks without constant user intervention
This direction has direct consequences on the required configuration to fully enjoy the future features of Windows. Current PCs, even recent ones, do not all have the NPU (neural processing unit) necessary to leverage these capabilities.
Compatibility and Planned Obsolescence
The shift to an ARM architecture also raises questions about the compatibility of existing applications. The article from ZDNet highlights a concrete risk: some older applications may no longer function on future Windows platforms optimized for AI. Microsoft has already experienced this type of friction with Windows 10 S and Windows 10X, two projects that limited software compatibility in favor of security and performance.
For professionals who depend on legacy business software, this transition represents a serious point of concern. The available data does not allow for a conclusion on the exact timeline of this shift, but the direction is clear.
Subscription and Monetization: What Microsoft is Preparing
Among the most discussed predictions is the possibility of a paid subscription model to access advanced features of Windows. ZDNet mentions the possibility that the most advanced AI features may require a subscription, following the model of what Microsoft is already doing with Copilot Pro in the Office suite.
The question of the disappearance of the Pro edition in favor of a tiered offering remains open. Microsoft has not confirmed anything on this point, but the precedent of integrating Copilot into the Windows ecosystem shows a trend towards the gradual monetization of services embedded in the operating system.
This model would have different implications depending on user profiles:
- Individuals might retain free access to basic functions, with limitations on local AI
- Businesses would likely be directed towards licenses that include AI agents and advanced security features
- Gamers and content creators would need to assess whether the performance gains from AI justify a recurring cost
No pricing or timeline has been communicated by Microsoft. Some analysts deem the subscription model inevitable, while others believe that competitive pressure (Linux, ChromeOS) will slow this transition.
The term “Windows 12” remains a convenient shorthand for referring to the next big leap of Windows. The reality described by Microsoft at Build 2026 is more nuanced: no new number on the horizon, but a gradual overhaul of Windows 11 backed by radically different hardware. For most users, the concrete shift will first involve renewing their PC.