Windows 10 build 18309.1000 (rs prerelease)

Windows 10 version 1903 build 18309 was released on 2019-01-03 to Insiders in the Fast Ring.

Windows Hello Improvements

 * Streamlined Windows Hello PIN reset experience now available on all Windows editions.
 * Password-less phone number account are now available on all editions.

Narrator Improvements

 * Downloading additional voices without downloading full language packs is now possible.
 * The main actions on Narrator Home, such as QuickStart and Settings, are now buttons and not Listview items.
 * Added Narrator + 5 twice Narrator command to render current character phonetics.
 * Other improvements

Other

 * There are now 11 more mouse cursor sizes available.