A singles match between CM Punk and Triple H at WrestleMania 30 is reportedly a "lock" for the event as we reported several days ago here on the website. WWE is said to be planning another "Summer of Punk" storyline that would culminate in a CM Punk vs. Batista match at SummerSlam.
Take the news with a grain of salt, since that timeframe could conflict with the release of Batista's Guardians of the Galaxy movie, which comes out in the same month. Batista will likely be doing global promotion for the movie.
We'll keep you posted as we hear more.