What's Next for Brock Lesnar?

It was the video that got several million views in just a couple of days after it was posted on YouTube. The staredown between Brock Lesnar and The Undertaker after Lesnar lost his U.F.C. Championship to Cain Velasquez on October 23. Now there is further speculation about Brock possibly heading back to the W.W.E. for at least an appearance at Wrestlemania. Much of it may just be pure speculation, but Lesnar and his camp haven't done anything to stop the flames from spreading that he will make some kind of appearance at 'Mania.

By the way, mixed martial arts is real. I heard a sports commentator recently question the legitimacy of the sport. W.W.E. is staged, U.F.C. is real.