Developed by 2K Marin, a recently-formed internal studio staffed by some of the original BioShock team - but
not Ken Levine [Actually, yes, Ken Levine will be involved in some fashion, even if only a figurehead role - Kotaku-fuelled edit].
Released late next year.
That is all.
Is it a surprise? No, it's not even slightly a surprise. But it is all official now.