Microsoft’s Windows 11 26H1 update, initially expected to offer only new silicon support without a host of new features, is now dedicated exclusively to new and upcoming Arm-based processors like the Snapdragon X2 Elite/Plus. This marks a significant shift in Windows 11’s development path—a first divergence in Windows deployment in the recent timeline, and a first for Windows 11. As a result, regular PC users with x86-64 and older Arm-based platforms will continue to use the Windows 11 25H2 as a feature update. According to the latest Windows IT Pro Blog, “Windows 11, version 26H1 is not a feature update for version 25H2,” indicating that a different version will serve as the next feature update for Windows 11, rather than the anticipated 26H1.
Microsoft is concentrating on providing full support for the new Windows-on-Arm platforms, some of which are already available. These platforms include Qualcomm’s Snapdragon X2 Elite processors and NVIDIA’s N1 and N1x SoCs. This new hardware requires optimization from Microsoft to ensure the best experience on Windows 11, so the company is dedicating most of its efforts for the 26H1 update to this task. Since new silicon requires fine-tuning, such as specific power profiles and hardware optimizations to extract maximum performance, Microsoft is separating Windows 11 into another branch to make sure that servicing and updates are easier, and also that shipping customized power/performance settings doesn’t end up corrupting the build for non-Arm CPUs.
In the past Windows 11 25H2 update, Microsoft used an enablement package (eKB) to activate new functionality in 25H2. Although there is no confirmation yet on whether 25H2 and 26H1 share the same code base, some modifications to the 26H1 could have separated the servicing branch quite a bit, meaning that Microsoft is not using the eKB for this Windows 11 version. However, we still need external confirmation for that, and more details about future support and the expected lifecycle of the 26H1 update, along with its support window.