I read on another site that there is a strong possibility this years HHN will include at least part of both parks (studios and IOA). Obviously this is unsubstantiated rumor but has anyone heard anything concrete on this topic?
Nope, but it seems like the thing to do. Rope off the walkway leading to ET and the kiddie stuff. Open the Mummy, Jaws, MIB. They could even have live concerts.
That rumor has been around for a long time. It's NOT going to be at both parks. If they do anything even remotely close to it, they'll have a pathway leading into USF and have lots of blocked of streets so people can ride Mummy. Don't count on it, though.