Not sure when you are going, but for my dates they didn't switch EE, they took away the EE for the Studios (both parks had EE before).
I hadn't heard about the menus changes either. All these changes are so hard to keep up with!
We arrive August 19th. I think before the change it was both parks until Aug 19th, then USF starting Aug 20.
I was hoping to see a change in the closing time, but it is still 8:00pm for most of my trip. I was hoping to see the park at night, but I don't think I want to visit on a Saturday or Sunday.
I'm keeping an eye out for a trip report with the new early entry time.