Nope, There's No Disputing It, This Is T-Hawk.

Take this screenshot, which clearly depicts T-Hawk kicking some ass in Street Fighter IV. Those who have played the game know that T-Hawk is totally not in Street Fighter IV's original roster and thus this must signal a - gasp - updated version.

JV247.com have a host of other screenshots including a character called Juri who, well, we've never heard of. Apparently she's out of Street Fighter Alpha or something though? We don't know. Answers on a postcard.