Windows 10 build 19536

Windows 10 build 19536 is the first Insider Preview build of either Windows 10 20H2 or 21H1. This build was released on 2019-12-16 to the Fast ring. From this build onwards, Fast ring builds are no longer tied to any specific release.

Changes

 * Optional Drivers now available through Windows Update as part of optional update improvements.
 * Updated Korean IME re-released.
 * Family group setup in the OOBE.
 * Your Phone App has been updated.
 * Phone screen feature supports pen input.
 * Bug fixes and general improvements.

Bugs and quirks

 * The Optimize Drives Control Panel shows incorrectly that optimization has never been made.
 * The Documents section under Privacy settings has a broken icon, and a rectangle shows on its place.