The January issue of EGM has an in-depth look at Street Fighter IV, but for now you'll just have to make due with this screenshot. Worry not, Street Fighter purists: despite the fancy-pants polygons, SF4 will be a 2d fighter. According to 1UP, you can look forward to new moves, locations, and gameplay features, but Street Fighter faves Ken, Ryu, Chun-Li, and Dhalsim will be making a return.
Other details, like what platforms the game will be on and the rest of the fighting roster, will have to wait, as Capcom is keeping hush for the time being.
