Capcom explains Street Fighter X Tekken on-disc DLC - GameSpot

Publisher says 12 "downloadable" characters will debut on PS Vita, were included on 360, PS3 retail copies to save hard drive space, negate compatibility issues.
Fighting universes collide in this Tekken/Street Fighter crossover.

Street Fighter X Tekken - Wikipedia

Retro magazine issue 07 by Marketing - Issuu

The Street Fighter x Tekken initial reveal was something else

Arcade – Darkstalker90 Gaming

Street Fighter X Tekken Character DLC Pack Review - Gaming Nexus

Capcom explains Street Fighter X Tekken on-disc DLC - GameSpot

Street Fighter X Tekken on-disc DLC: Crisis averted? – Destructoid

Tekken X Street Fighter - GameSpot

Street Fighter X Tekken on-disc DLC: Crisis averted? – Destructoid

Save 80% on Street Fighter X Tekken: Additional 12 Characters Pack on Steam

Street Fighter X Tekken Dlc On Disc - Colaboratory

Street Fighter × Tekken, Street Fighter Wiki