https://wccftech.com/microsoft-releases-windows-10-19h1-build-to-officially-launch-phone-screen-beta/

Earlier today, we reported that the Windows maker was planning on introducing a new “phone screen” feature that will enable users to mirror their Android screens on Windows 10 devices. The feature is in beta right now with Windows Insiders able to test it starting today with Windows 10 Insider Preview Build 18356.

Here’s the complete changelog: