As part of today's announcement of the new Windows Insider Dev Channel build 22533, Microsoft announced some updates to the Your Phone app. The update brings an "improved design" of the calling experience for Windows 11 PCs using the Your Phone app:
This week we are beginning to roll out a new Calls experience for the Your Phone app on Windows 11. This update will be available to all Windows Insiders in the Dev Channel. This update includes a new in-progress call window with updated icons, fonts, and other UI changes that align with the improved design of Windows 11. Placing calls with the Your Phone app should still work as before with this new UI! Please try it out and share any comments with us via Feedback Hub under Apps > Your Phone.
Microsoft last updated the Your Phone app last November. The app works with select Samsung phones to view and reply to text messages, make calls, and sync photos from your phone, all on your PC