A title update issued shortly after the launch (or possibly at launch) of the PC version of Super Street Fighter IV: Arcade Edition will disable the DRM-imposed restrictions on the roster. In short, you can use all 39 characters while offline, instead of being limited to 15. "As one would logically expect," Capcom's Christian Svensson notes, "to get any of the benefits of the online services (online multiplayer, replay sharing/watching, achievements, etc.) you must be online and logged in."
Svensson said that following the response to the DRM announcement, Capcom spoke to fans in the Ask Capcom forum. "The argument that legitimate users would have a worse experience than pirates was the loudest and most convincing," he said. "We certainly don't want that to be the case and that was never our intention." With Capcom having reversed its decision in favor of its own customers, we feel it's important that we all hold up our end of the deal and don't pirate the game.