Ultra HD TV's
Some freaky looking hybrid windows 8 laptops/tablets
A giant tablet (30+ inches)
A windows 8 Xperia phone and an android Xperia phone (perhaps 2)
Announcement that the PS2 is finally dead with a lifetime shipment figure
It'd be cool if they announced the PS4 too, but that's not gonna happen
My prediction threads:
Wii U will sell under 40m units (made on 14th September 2012)
PS Vita will sell under 20m units (made on 30th September 2012)
Wii U will sell under 7m in 2013 - I was right