the beta re-opend and all the slots are filled again, Im in it, but all the slots are filled again. I bet valve will grab anohter batch though, just wait. After playing for a bit, its nothing special, a few effects look better, some gun textures look improved, hdr is on all maps and multicore rendering is now available which is nice. They should've updated map textures though, its hardly an update imo and shouldnt be a locked beta