Capcom have released a couple of images of Street Fighter's Ryu from Namco Bandai's Tekken X Street Fighter. It's a very early version (the game is still a long way from release), but it gives you an idea of what Ryu and the rest of the Street Fighter gang might look like in Namco's hands.
If you are a bit confused about the two games coming out of this collaboration and just who's doing what then you're not alone.