I think we'll get "Mega Extreme Street Fighter IV" before a SF V
Sadly, I won't doubt another iteration of SSF IV before a true sequel. What's interesting to me is that they swore this would never happen back when the original SF4 launched. They claimed they didn't want to duplicate the situation with SF2.
Playstation = The Beast from the East
Sony + Nintendo = WIN! PS3 + PSV + PS4 + Wii U + 3DS