So, the major thing going on this year is, not surprisingly Sword Art Online related. SC already announced that the creator of SAO and Accel World will be coming and hints at other SAO-related guests.
The Aniplex USA page on Facebook is hinting who some of those guests will be, and they're also related to Fate:
Hint 1: Sword Art Online is full of innocence.
Hint 2: In the second world in the series, you see a lot of fairies overfly each other.
So Eir Aoi and Luna Haruna, who sang SAO's "Innocence" and "Overfly" OP and ED.
Screw SAO, give me Zero EDs.