Here’s a concise summary of the official release notes for Windows 11 Insider Preview Build 26200.5670 (Dev Channel), directly from the Windows Insider Blog:
Key New Features and Changes
Passwordless Improvements
1Password Integration: You can now use 1Password as a passkey provider with Windows 11.
Setup:
Install 1Password Beta for Windows.
Enable the plugin in Settings > Passkeys > Advanced options.
Complete Windows Hello verification.
Use or save passkeys with 1Password.
For Developers: There’s a new API for integrating credential managers .
General
Versioning Updated: Dev Channel now shows version 25H2 in Settings > System > About (and winver), indicating this will be the 2025 annual feature update.
Voice access
Japanese temporarily disabled for voice access while bugs are fixed.
Settings
Browser Default Changes (EEA region): When you set a new default browser, it will also be pinned to the Taskbar and Start menu (optional).
Fixes
Gradual Rollout with Toggle ON:
File Explorer: Fixed occasional crashes at Home, and missing thumbnails in Favorites.
Start Menu: Fixed duplicate entries and folder animation issues.
Typing: Fixed ctfmon.exe crash impacting typing.
Lock Screen: Fixed memory leak with slideshow and improved dialog scaling.
For Everyone in Dev Channel:
Boot Sound: Fixed Windows Vista boot sound playing instead of Windows 11’s.
File Explorer: View settings and desktop icons now persist after changes.
Known Issues
General:
Some users get a rollback and error 0x80070005 during install—try fixing via Settings > System > Recovery > “Fix issues using Windows Update”.
Start Menu:
Touch does not reliably work for new Start Menu (e.g. swipe up broken).
Drag and drop: Limited from "All" to "Pinned".
Xbox Controllers:
Bluetooth connection may cause a bugcheck (blue screen). To resolve: Go to Device Manager > View by driver > Locate "oemXXX.inf (XboxGameControllerDriver.inf)" and uninstall.
Click to Do (Preview):
On AMD/Intel Copilot+ PCs, first text actions may take a long time post-update.
File Explorer - AI Actions:
Narrator scan mode has issues with AI summary for 365 files and lists (workaround: Caps + Right).
Widgets:
Pinning in new Widgets board reverts to previous experience until support is finalized.
Insider Program Reminders
Dev Channel builds are based on Windows 11 version 24H2, with some features rolling out gradually using Controlled Feature Rollout technology.
Features shown in these builds might never ship publicly or might appear in other channels first.
Accessibility features may not be fully functional with some previews.