The recent Dean Ambrose vs. The Undertaker match on SmackDown is confirmed to be Taker's last scheduled appearance for the time being. WWE left it open to where Taker could come back and confront The Shield later.
The Undertaker came out of these recent matches in much better shape than he has in the past few years. Going into WrestleMania 29, Taker rested more, changed his diet and tried new workout routines.
Taker also worked a smarter match with CM Punk. It's said that he had the mindset of his matches with Triple H were going to be some of his last but going into the Punk match, he just wanted to give the fans a good match but not destroy himself.