threads are known to work well only on middle-ground 2-4 cpu machines, later they start hitting memory locking wall, and when it comes to things "coming", most of the industry thinks that things like transaction memory is the thing that's coming.

Not to mention that when you look at efficient multi-cpu systems outthere you start noticing designs like erlang ( granted, what they're using is lightweight threads, but that's not the power of their solution)

Threads are here, they are ugly, and we're growing out of them pretty fast.