Variety reported that the Academy of Motion Picture Arts and Sciences had culled their original list of 58 potential short animation films down to 10. All links go to a trailer for the short film, except where noted.
Of special note: The Numberlys is a book, a short film, and an iPhone app. I find this multi-platform integration fascinating.
The Bigger Picture
dir: Daisy Jacobs
Coda
dir: Alan Holly
The Dam Keeper
dir: Robert Kondo and Dice Tsutsumi
Duet
dir: Glen Keane
(link is full animation)
Feast
dir: Patrick Osborne
(Feast will be shown in front of Big Hero 6)
Footprints
dir: Bill Plympton
Me and My Moulton
dir: Torill Kove
The Numberlys
dir: William Joyce and Brandon Oldenberg
A Single Life
dir: Joris Oprins
Symphony No 42
dir: Reka Busci