Microsoft has released Windows 10 Insider Preview Build 18970 (20H1) to Insiders in the Fast ring. The new build includes the new cloud Reset feature and a new tablet experience for 2-in-1 PCs. Microsoft is requesting that users share their experience with these new features here. Microsoft states that with this experience installed, once you fold back the keyboard or remove it altogether, Windows 10 should switch to the new mode shown above. The full release notes with all the improvements for this Insider build are detailed below.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-insider-build-18970-comes-with-new-2-in-1-tablet-pc-experience/