The rumor mill is running rampant that the WWE is looking at splitting up their brands again. It all started when Shane O'Mac returned to try and take over Raw. That naturally led fans to believe that Steph (or maybe Shane) might get moved to SmackDown, or a differently named brand, to compete with the other sibling.
Now, there's another factor that's leading people to believe this is a possibility, as there was an ad for an upcoming WWE Event that read "WWE vs Raw." While that's quickly been changed, and Ticketmaster is prone to make errors like that, that doesn't mean that this isn't a real possibility. It'll be interesting to see how WrestleMania plays out and how that might affect WWE's brands going forward.