Microsoft is rolling out Windows 10 20H1 Build 18936 to Windows Insiders in the Fast ring. The build includes support for passwordless authentication, Phone screen support for more Surface devices, and various fixes. Microsoft also announced the public preview support for FIDO2 security keys in Azure Active Directory. The latest driver update in the Windows Insider rings (Marvell 15.68.17013.110) added support for the following Surface devices: Surface Laptop,. Surface Pro 4,. Pro 5, Surface Pro 6, Surface Book, and Surface Book 2.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-20h1-build-18936-released-with-passwordless-sign-in/