WWE is getting in on the rumors of a big surprise at Monday Night Raw later on this evening (Jan. 25, 2016) in Miami, Florida:
BREAKING NEWS: Rumors are running rampant that a major star returns to #Raw tonight on the road to @WrestleMania! #WWE— WWE (@WWE) January 25, 2016
Considering the location, the finish of the Royal Rumble last night, and this being the start of the build to WrestleMania 32 proper, The Rock seems like the obvious "major star" here but anything is possible.
Let the speculation begin.