Quoted from vireland:
No way Pat (or any Stern/JJP designer) is doing two in a row. So he's either doing Toy Story or Wonka, and since Toy Story was originally supposed to be first, that's the one he's likely doing. He may be helping with Wonka in an advisory role, but I seriously doubt it's his design.
IIRC Jack said both were shootable already - and that was around when DI was unveiled. He's supposedly been working on the next two for years already. Though whether they really are Wonka, Toy Story or any of the other rumoured titles is open to question.
Also, Aerosmith and GotG were essentially back to back - 6 months apart. Both Borg titles.