I don't if it's alread posted here,
but check it, a main developer talking about the new game and the first in-game gameplay action!
(the action starts after around 1 minute, the videoclip starts like a joke, but keep watching)
http://files.filefront.com/Street+Fighter+IV+1up+Show+Exclusive+WM/;9341072;/fileinfo.html
''Hadouken!''