https://wccftech.com/windows-10-2020-build-18936-with-passwordless-sign-in/

Microsoft has released a new Windows 10 preview build from the 20H1 branch due to be released in spring, 2020. Windows 10 Insider Preview Build 18936 is now available for insiders in the Fast ring.

Along with the usual bug fixes and improvements, Microsoft is also rolling out support for “Your Phone” screen mirroring feature to more Surface devices. The feature is enabled through a driver update for Fast ring Insiders using Surface Laptop, Surface Laptop 2, Surface Pro 4, Surface Pro 5, Surface Pro 6, Surface Book, and Surface Book 2.