0AD got a new beta 5 release, which improvements in rendering & AI code, a completely new faction (Iberians), and a new map:
MegaGlest also got updated recently (Version 3.5.1), bringing various fixes and performance improvements. Furthermore I can report that both the sable and the development version of Battle for Wesnoth have been updated, and I strongly recommend everyone (who has not played this game for a while) to retry this classic in the newest development version.
EvolutionRTS, a nice looking (but sadly CC-by-NC-ND licensed) game based on the SpringRTS engine also saw an update to version 1.3 this month (check out this gameplay video).
Hmmm, what else? Ahh, UFO:AI was ported to Android, and and the change of Warzone2100 from SDL to qt (which is not exactly a game framework) raised some eyebrows, but will probably make the game more easily portable and better integrated into your favorite desktop.