According to the official WWE Twitter page, you can officially pencil in Randy Orton vs. Edge for the May 23rd WWE "Over The Limit" pay-per view event in Detroit, Michigan.
The WWE tweet reads: "Just announced for WWE Over The Limit May 23 in Detroit: "The Rated-R Superstar" EDGE will face "The Viper" RANDY ORTON! #WWEOTL"