Producer Yoshinori Ono talked a bit about the 3DS version of Super Street Fighter IV in this week's Famitsu.
Speaking in the interview, Ono explained that they were initially looking at both the PSP and DS, but wasn't satisfied with what they would be able to do on said handheld platforms; however, that changed once Nintendo announced the 3DS. With it, they could really show off SSFIV on a handheld console. He didn't go into too much detail about how they were going to incorporate the 3D aspect but Ono assured Famitsu that "the gameplay will be the same as Super Street Fighter IV."
Fans of the franchise will be glad to know that Ono will most certainly not dumb down any aspects of SSFIV in order to appeal more the kid audience of Nintendo. "Rather than that," said Ono," we'd like to make it into a title that makes kids grow."
While Ono and team continue to explore the 3D aspect of the 3DS, it's most certain that SSFIV will remain intact and play as it should, even on Nintendo's child oriented hardware. No release date has been mentioned but the producer hopes to release the game once things start "heating up" for the franchise again.