According to a source within WWE, the plan as of this writing is to have the Tag Team Title Match, featuring Team Hell No vs. Dolph Ziggler and Big E. Langston, open WrestleMania 29 on Sunday night.
The original plan was to have the mixed tag team match open the show, but as of today, the plan changed and currently the tag title match is set to open the show.
-Wrestlezone
Good call if true. They pretty much have to get the tag match out of the way to keep the suspense of Dolph cashing in going. Plus as Bischoff said you want exciting action to open the show and pump up the crowd (why he loved keeping the cruiserweights in their own respective division) and nothing says exciting action quite like Ziggler.