Exactly why he's going to be next year. If Rihanna agrees it's going to be Rihanna I feel even if Stevie is well as they've not had her do it yet. If she agreed before she'd agreed again. Baby commitments will stop her but I see nothing else doing so.
Yeah, that's just a tech error. Unless he comes around and dunks one on May 14th - not implausible as the only other show the week before is Gregory Porter on May 10th - two will be your lot.