My guess says Smackdown. He'd be a big name surprise to return on Smackdown 1000 coming up here soon.
I'm actually kinda bummed about it. I was enjoying what he was doing elsewhere on the Indys and was hoping he'd branch out and work more dates. I feel like in WWE, he'll be a big deal for like a month and then they'll get bored with him and he'll just be a dude on the roster for the next 17 months of his contract. I don't blame him though. Get that last big payday and call it quits.