Microsoft has released Windows 10 Insider Preview Build 18855 for Insiders in the Skip Ahead ring. This 20H1 build is mostly bug fixes, but does include one cool feature. It will now restore the contents of Notepad windows after a restart from installing Windows Updates. Microsoft released the Windows 10 Build 18356 (19H1) to insiders in the Fast Ring that introduces the new Phone Screen feature in the Your Phone app. This feature allows you to mirror the screen of an Android device on your Windows 10 PC.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-releases-windows-10-build-18855-20h1-to-skip-ahead-users-with-bug-fixes/