These clips are from the Taito center in Akihabara, and show off characters like Balrog and Sagat. Thanks to RyukyuTwo20 for uploading them.
SF4 was at the Taito center in Akihabara today. Clip of M.Bison (4th stage boss at current time). Better known as Balrog in the US
you saw it here first. there’s been a number of gaming news sites and other people uploading this vid as their own, but this first look with my shaky poor quality camera was uploaded here first ;)