Last week The Wrestling Observer reported that a WrestleMania 30 main event of John Cena vs Bray Wyatt had been discussed by the WWE creative team, however, PWInsider.com is now reporting that is not the case.
At one point awhile back, John Cena vs Bray Wyatt was talked about for WrestleMania, with the idea being that Wyatt would win the Royal Rumble match then challenge Cena for the World Title at 'Mania.
This was all discussed, however, prior to WWE deciding to unify the World and WWE Titles, and once that happened things of course changed.
The current backstage feeling in WWE is that Batista will win the Royal Rumble match and go on to challenge Randy Orton for the WWE World Title at WrestleMania. This doesn't mean that we won't see Cena vs Wyatt at some point down the line, but the match is not likely for WrestleMania.