Microsoft released KB5070311 (OS Builds 26200.7309 and 26100.7309) (https://support.microsoft.com/en-us/topic/december-1-2025-kb5070311-os-builds-26200-7309-and-26100-7309-preview-5cd455bf-3291-47fa-b0bf-e5f60d0ea7af) for Windows 11 25H2 and Windows 11 24H2.
See the referenced KB Article for information about any quality improvements, new features and the highlights included in the update.
Note: Because of minimal operations during the Western holidays and the upcoming New Year, there will be no December 2025 non-security preview update. There will be a monthly security update for December 2025. Normal monthly servicing for both security and non-security preview updates will resume in January 2026.
Update: To get the update, go to Settings > Update & Security > Windows Update. The link to download the update can be found in the Optional updates available section.
Known issues in this update:
1) File Explorer might flash with a white screen in dark mode
2) Password icon might be missing or invisible in the lock screen sign-in options