TA:Spring 0.75b2 is out (a few days after 0.75b1). These are the first releases under a new lead since the previous stable versions. TA:Spring is a spectacular 3D RTS based largely upon Total Annihilation, although these days you do not need TA to play Spring. It has a very healthy mod scene with some amazing looking mods.
One such mod is Star Wars: TA. It is, unsurprisingly, set in the Star Wars universe. It looks like the realisation of every 1970s kid's dream - commanding your own army of stormtroopers annihilating those rebel scum. (Yes, The Empire Strikes Back was by far the best of Star Wars movie. You are wrong if you disagree.)
Another exciting mod is Spring 1944 which looks really promising but is yet to be officially released so I don't know if you can play it yet. So this screenshot will have to do.
Do you like old school (NES) Zelda RPG and do you not really care about uber graphics? Monster should be good fun for you.
Worldforge keep up their steady progress. It will be interesting if all the years of work ever culminate in a playable game for this ambitious project. It's all about RPG and expansive 3D worlds.
Speaking of 3D RPG... the MMORPG Planeshift got updated as well. It still looks nice, it still has non-free media. Last time I played it was a while ago (it was a bit boring then - I ran around a town for 30 minutes then gave up) and it looks pretty sweet these days.