Get it from the usual places:
Bug fixes. The next 21.2 beta is scheduled for Friday, March 12.
to 21.2.12 "Clio"
-- event-stream unification for MS Windows from Andy Piper
-- Determine best visual to use to avoid flashing from IENAGA Kazuyuki
-- Fix for new Berkeley DB library from Paul Keusemann/Gregory Neal Shapiro
-- Various package-ui fixes from Jan Vroonhof
-- Fix for doubled font-locking during buffer reversion
-- KFM browsing support from Neal Becker
-- info fix from Didier Verna
-- Build bug fixes from Martin Buchholz
-- Various Documentation updates
-- X-Face support for MS Windows native build from Gleb Arshinov