Tayuya and Kimimaro are dead.* The way Tayuya died however makes me think that she could have simply been knocked out and be brought back.* Thing is though, if she wasn't killed then, I know Orochimaru would have had her killed later for her failure.

Kimimaro is overly dead.* He couldn't be anymore dead, seeing that there is now a section of field near by Road's End that serves as a his grave... A really perverse grave with all those bones erected, with his body sitting above them.* If Orochimaru wanted to bring him back, he probably would be, but I would think that he would rather use his body for parts and experimenting.* Simple as that...