Windows Phone 8.1 build 12307

Windows Phone 8.1 build 12075 is a build of Windows Phone 8.1. It was leaked on 2020-01-04. It is based on Windows 8.1 build 9651.

Particularities
This build looks like the final build of Windows Phone 8.1 except for the Cortana animation. Cortana in this build feature a mouth that rotates around.