Windows 11 Insider Preview Build 26120.1930 (KB5044388) is now available for Windows Insiders in the Dev Channel. It includes a new simplified Chinese typeface (Simsun-ExtG) with 9,753 ideographs that support Unicode Extensions G, H, and I.

The update now contains the desired Biangbiang noodles character, U+30EDD. The Windows Sandbox Client Preview, which started with Build 26120.1843, is now available to all Insiders in the Dev Channel. The update also resolves a problem for some Insiders with dual boot devices in which the boot menu did not display correctly. The Copilot key can now be set to launch an MSIX-packaged and signed app, which ensures security and privacy.

Announcing Windows 11 Insider Preview Build 26120.1930 (Dev Channel)

Hello Windows Insiders, today we are releasing Windows 11 Insider Preview Build 26120.1930 (KB5044388) to the Dev Channel.

Changes and Improvements gradually being rolled out to the Dev Channel with toggle on*

[General]

• This update includes a small set of general improvements and fixes that improve the overall experience for Insiders running this build on their PCs.

[Fonts]

• There is a new simplified Chinese font (Simsun-ExtG) with 9,753 ideographs supporting Unicode Extensions  G,  H and  I. Included is the highly requested character for Biangbiang noodles. This character U+30EDD is said to be the most complicated Chinese character, as you can see in the image below. We are aware that some applications may not be able to display these new extension characters yet.
  • Unicode range G 30000-3134A (4,939 chars)
  • Unicode range H 31350-323AF (4,192 chars)
  • Unicode range I 2EBF0-2EE5D (622 chars)

Biangbiang character Unicode 30EDD.

[Windows Sandbox]

• The new Windows Sandbox Client Preview that began rolling out with  Build 26120.1843 should now be available to all Insiders in the Dev Channel.

Windows Sandbox Client Preview with new dropdown showing clipboard redirection, audio/video input control, and the ability to share folders with the host.

Fixes gradually being rolled out to the Dev Channel with toggle on*

[Other]

• Fixed an issue for some Insiders with dual boot devices, where the boot menu (where you select which OS to boot into) wasn’t displaying correctly (the color was wrong, and it might only display in half the available space).

Changes and Improvements gradually being rolled out to everyone in the Dev Channel

[Settings]

• We are adding the ability to configure the  Copilot key. You can choose to have the Copilot key launch an app that is MSIX packaged and signed, thus indicating the app meets security and privacy requirements to keep customers safe. The key will continue to launch Copilot on devices that have the Copilot app installed until a customer selects a different experience. This setting can be found via Settings > Personalization > Text input. If the keyboard connected to your PC does not have a Copilot key, adjusting this setting will not do anything. We are planning further refinements to this experience in a future flight.

Announcing Windows 11 Insider Preview Build 26120.1930 (Dev Channel)