Adjust Your Royal Rumble Predictions Because The Rock Is In Philadelphia

The Royal Rumble is in Philadelphia, and according to his Twitter account, so is The Rock:

The Rock Tweet
the rock philly

So what does this mean? Is the Rock a surprise entrant in the Rumble? Is he here to put Brock Lesnar in an old-fashioned motorcycle sidecar so they can travel along the road to a Rock-Brock WrestleMania? Should I be allowed to update at 1am? Either way, you can bet a lot of Royal Rumble pools just got a lot more heated.