Here is Sagat's Tiger Uppercut during his Ultra combo. I have seen it action and it seems like a crazy version of the Tiger Genocide, which is the Tiger Knees to Tiger Uppercuts. Like Bison, Sagat's EX specials are nuts too with a multi-hit Tiger Knee and multi-hit Tiger Uppercuts similar to Super SFII Turbo and the Street Fighter Alpha series.
Here's Vega and he is a brunette in this one compared to being blonde in previous games. So far from what I read, he seems the same as previous SF games with Rolling Claw and the Flying Barcelona now having EX versions, which seems crazy.
Lastly, here's Balrog, the infamous boxer who was high tier in Super Turbo. He retains his same old moves now with EX versions. I just can't imagine EX Crouch Dash Punches or even EX Flying Headbutts if it is way safe against projectiles.
Well, the original 12 from Street Fighter 2 are set for Street Fighter 4 and Capcom is still revealing more characters and stages towards its summer release at Japanese arcades. Location tests might continue there to reveal anything new. Akuma is a sure safe choice to be in SF4 while some new ones are still probably waiting to be shown. Fans want Cammy in and I think is a sure bet too since this game needs more ladies and Capcom promises more of them in this one, so we'll see if they deliver on that front. Otherwise, Street Fighter 4 is still awesome and I hope it makes an appearance at the San Diego Comic-Con this summer or likely this year's Evolution tournament this August at Las Vegas.