Oh, got it. I have been worried that they would not extend park hours for the summer ever since I started planning back in January.
We go in July and the parks have always been open late, but right now the latest park to be open is MK - and only until 10:00 pm! I am hoping that it is just due to the fact that all "new" experiences (AK late night, Frozen, Soarin, Star Wars Fireworks, etc.) haven't all been nailed down yet and hours will be changed soon.