Considering Troika's last two products, I don't have high hopes for it. Maybe, for once, they'll release a product that doesn't have bucketful of bugs. But I doubt it.
Arcanum and Temple of Elemental Evil?
I won't comment on Arcanum, you remember our last argument and it didn't change anyone's opinion.
Temple of Elemental Evil was rushed. Troika were forced by Atari to get this game a month earlier. Troika made several patches and sent them to Atari. They didn't get a reply and they cannot release them in public without the later's aprouval. Well, I always hated Atari but this was unexpected.
Mind you: VTM: Bloodlines isn't an RPG like the others. I'd reccomend you to check several in-game movies to see what I mean.
So, KotOR2 seems to be my only hope. Dragon Age doesn't look too bad a premise, though it seems to be some years away from actual release. The Witcher is iffy.
KotOR2 isn't developed by Bioware but by Obsidian Studious: the people behind Icewind Dale, IWD2 and Planescape: Torment so we can expect a different approach to KotOR2. Might be interesting to see, then I never played the original and I doubt I will in the near future.