According to TicketMaster the pre-sale for the SummerSlam Fan Axxess tickets starts at 10am today, July 5th. It states that Randy along with Rey Mysterio and Edge will be participating in the VIP autograph sessions happening on August 14th, and August 15th.
It does state that the talent scheduled may change, so be aware of this fact before purchasing your tickets. Also, I would say take it for what it’s worth since there is nothing about this on WWE’ Official website at this time. 
Here is the information:
WWE’s Interactive Fan Event featuring matches, autographs, and more! Visit WWE.com for more information
$20 General Admission
$70 VIP includes autograph session with Randy Orton from 5pm – 6:30pm
