Overview
- On February Patch Day, Microsoft released KB5077179 and confirmed it is the Windows 11 26H1 build.
- Availability is limited to newly shipped ARM-based devices and it cannot be installed on existing Intel or AMD systems, with no manual installation path.
- Microsoft currently lists Qualcomm’s Snapdragon X2 as the supported processor family and positions 26H1 as platform-level optimizations for performance, battery life and AI workloads rather than new features.
- For current Windows 11 installations, nothing changes functionally and the next wide rollout is planned as version 26H2 in autumn 2026.
- Manufacturers plan to ship Snapdragon X2 laptops in the first half of 2026 with 26H1 preinstalled, while reports of potential Nvidia N1X support remain unconfirmed.