If you were hoping Rival Schools was heading to PSN, XBLA or any other digital distribution service then you are out of luck.
Capcom’s Chris Svensson said on the Capcom-Unity forums “…unfortunately Rival Schools will not be making an appearance. There are IP clearances and rights we no longer have (particularly pertaining to voicework/soundtrack I believe) so our IP management group has told us it can’t be re-released. I’m sorry as it’s one of the ones I really wanted to see be put back up.”
For now if you want to play some Rival Schools you will have to dig up the PlayStation 1 version. Never say never though. Miracles do happen though, look at Tatsunoko vs. Capcom.