We probably got at least 3 years before next gen starts. Keep in mind that sometimes prev gen consoles still manage to survive a couple years after the gen ends. As far as I'm concerned we need at least 2-3 regular FF games per gen, we've only just now gotten one.
And, I won't touch 3D gaming until next gen, if ever, period. It's not really about having to come up with the extra money for a new compatible LCD when I could be spending that money on games. As far as I'm concerned this is gimmicky 3D. It's still flat in my opinion and id rather wait until holograms. Were I would actually be able to play in the middle of the game, where I could turn around and still see parts of the game. And hopefully wouldn't need these bloody glasses.