Super Street Fighter II Turbo HD Remix is actually two games in one package. You get an arcade version of Super Street Fighter II Turbo with new sprites and a rebalanced version where Ryu has a fake fireball. Capcom is trickling information about other changes in the remixed version and their in depth FAQ explains Akuma will be a balanced character. Players will be able to choose him in ranked online matches without using the complicated code.
Hmm… I wonder what changes Capcom is going to make to balance him out. Perhaps, he will be like the Marvel versus Capcom 2 version?