Am I the only one who thinks the late winter/early spring release is typical marketing? i.e. the game wasn't going to be ready for Holiday 2009, but calling for an "early Spring" date keeps it in mind and marketable. Winter/Spring/Summer or slow so the 9 month "slide" is forgivable.
Wouldn't be the first time.
No, but the thing is I really do think it was supposed to be ready for last Christmas, and we know that GT5 was one of the first 3D demoes out there. I think they've looked at this long and hard, and realised that the crowd that goes for GT5 is also the crowd that buys a new TV to enjoy its experience, just as a lot of them buy wheels, seats, etc. Of course I may be speaking for myself - I know I bought my first widescreen TV in honor of GT3's support for it (which was fantastic, it has to be said - great improvement for a driving game back then), and if it's anywhere near good, it'll definitely be a big factor in getting a 3D TV somewhere first half of 2011.
EDIT: Heh, in a sense I guess that's already true - Playstation 3 with 3D and Arc support is in some ways a bigger change than PS2 to PS3 ever was.