The new Start menu design is available starting with the release of the Windows 11 build 26200.5641 (KB5060824) in the Dev Channel and build 26120.4250 (KB5060820) in the Beta Channel. However, if the new menu isn't available, it's still possible to turn it on manually using the ViveTool.

There’s also a new mobile device button on the Start menu that lets you expand or collapse the Phone Link interface that appears alongside the Start menu. Microsoft is also allowing Windows 11 users to choose what lock screen widgets appear, allowing you to add or remove widgets and rearrange them for the lock screen.