I think we don't need a new generation yet, I'm too poor anyway after last and soon-to-be this year.
But for me, I might for one console and get the other one later, but the only thing I care about is that they can play the previous generation games and I can transfer the former generations memory onto the next one.
Xbox720 (Are they REALLY gonna call it that!), I might buy on launch, ONLY if, they have a decent amount of memory, can play previous gen games and can transfer the memory from my previous Xbox360 onto itself...wirelessly! (or not, also if it has new features)
PS4, Maybe later or not, depends if I get the new Xbox, if has to have to same reasons as above, but has a better hub, the PS3 hub is really hard to navigate. (or just takes a long time)
WII U, I'm gonna wait until they get some good games...and a good review!
Or I might just upgrade my PC (MY WALLET. D

, but that will cost a heap and will passed within a year.
...So please don't announce/replace/rumor any new gen consoles....just yet. (WIIu excluded)