Well, Pokken Fighters/Tournament have already been trademarked (a couple of weeks ago in Europe; about 9 months ago in the US), but not explicitly announced. I'd say a little less than half on the Nintendo front, a good number of those titles seem to have been announced at some point or another.
The artwork posted in this thread is gorgeous. Alucard's "androgyne beauty" has been pretty much established so it doesn't really bother me too much.
Hope for the best and expect the worst here. I'm really hoping that they don't place this sequel in the new universe, but I don't really see why they would. Then again, why would they start working on the project without him? Very fishy on Konami's part, if it's true.