It's called Prologue and stars Alisa and Xiaoyu as playable fighters, but more will join them. Hybrid features HD Tekken Tag Tournament and an animated film.
Announced at E3 this year, Tekken Hybrid features the HD version of Tekken Tag Tournament and the upcoming Blu-ray movie release of Tekken: Blood Vengeance. Now thanks to ComicCon we also know it'll pack Tekken Tag Tournament 2 Prologue.
This has now confirmed Tekken Tag Tournament 2 for home consoles, which up until now had only been officially named for arcades. Tekken Hybrid releases later in 2011.