Nintendo releases Animal Crossing U (it's probably coming within a year anyway), Hyrule Warriors, Bayonetta, and Yarn Yoshi a the same time, cut the Wii U's price to $250 with a generous bundle, and begin praying.

Seriously, Zelda U's being influenced by LBW suggests that the former will be coming in 2015, so other than Smash Bros 4, they're running short of big guns.

Bayonetta 2 and X will probably be out for Christmas, and I'd be very surprised if not something quite big is announced at E3 for the holiday season as well. They're bound to have something that's been kept under wraps, like the last many years.

Smash is coming in 2014. no bigger title then that this year, expect MK8.

It is probably just Sakurai trolling again.

SSB will be Dec 2014

Another thought is that it's for uniformity with the 3DS version's launch window, which is also a season.

Winter starts 4 weeks earlier than that where i'm from