You already knew that PS4 would be playable at the GameStop Expo August 28, but today the firm has announced Xbox One will on-hand as well. Both console manufacturers will also be hosting Q&A sessions. It all takes place at the Sands Expo and Convention Center in Las Vegas. The retailer expects to host 80 developers, publishers and vendors. PowerUp Rewards members need only play $35 for an early bird ticket, or you can grab a VIP pass for $90.