Creator and admin' of the HLEU, French translator of Cry of Fear.
Half Life :
YELLOW SHIFT - no updates since... well... But his dev' post sometimes to tell us it's still alive, still. Another story about a janitor (the fourth mod with a cleaner!).
THE CORE - updated regularly, but yet no release date. Sounds like one of the greatest mod's ever in Black Mesa Incident, tough.
Half Life 2 :
UNDERHELL CHAPTER 1 - coming... September 1, 2013!!!
CITIZEN 3 - coming... or not... It would be cool for the dev's to communicate a bit :/
TITAN XCIX - the one-man army working on that assures us it is still in development.
OPERATION BLACK MESA/GUARD DUTY - at least Q1 2014 for OBM multiplayer.