A screenshot of Street Fighter X Tekken posted on the Xbox LIVE Marketplace page for the game has unintentionally confirmed Tekken‘s Ling Xiaoyu and Street Fighter‘s M. Bison.
The screenshot in question features Tekken‘s Hieihachi and Street Fighter‘s Dhalsim on-screen, though portraits of Ling and Bison can be seen on each fighters’ team above the health bars.
Thanks, Shoryuken.