The Undertaker is a badly banged up 46-years-old with nagging injuries to his hip and shoulder. Though four years his junior, Triple H is not in much better condition and has to start preparing for the day when he will run WWE with his wife, Stephanie McMahon Levesque, which has had some of our commentators hoping they know that it's the right time to go and hang up their boots for good.
However, it is very unlikely that their Hell In A Cell match at WrestleMania 28 will be either man's last hurrah. Let's start with The Undertaker. Apparently he's healed well enough from his surgeries last year and feeling in good enough shape that WWE expects him to compete at a few more WrestleMania's to come, as Dave Meltzer postulated in this week's Wrestling Observer Newsletter:
At one point the feeling was that he would retire after this year and going 20-0, but that is no longer the feeling, particularly since it's not being hinted at. A lot will depend on how his body holds up after this match but the betting line is he'll be back, perhaps for a few years since he's now down to probably doing one match per year.
I agree that if this was to be The Undertaker's retirement match, then they would have made it a major selling point for the show, like they did with Ric Flair in 2008 and Shawn Michaels in 2010. Given that Undertaker isn't openly talking about retirement, it's hard to see his final match being next year either unless this year's match takes too much of a toll on him.
With Triple H, the evidence is more cut and dried, as WWE's annual 10-K report published last Thursday revealed that "wrestler Paul Levesque had extended his booking agreement with the company until March 30, 2016, for the same downside guarantee of $1,000,000." This means that Hunter probably won't retire until WrestleMania 32 at the earliest, which is a bit of a scary thought.
I guess he won't be passing the torch to anybody any time soon, but I doubt anyone within WWE will complain too much.