WWE will be doing a lot of production upgrades in the months leading up to WrestleMania 29. One upgrade is that WWE will be purchasing the latest state of the art HD television cameras to replace the company’s existing equipment.
There has also been talk of WWE once again experimenting with 3D technology. Last year WWE negotiated with Fathom Events about showing a 3D version of WrestleMania in movie theaters, but a deal with the events company was never reached.
http://www.sescoops.com/wwe-planning-production-upgrades-3d-discussed-austins-show-renewed/
Finally, true 1080p HD instead of just upscaled 720p. 3D WWE could be epic, but it could also be a disaster. Seeing Taker do his over the top rope jump in 3D with him jumping towards a camera would be epic.