I'm kind of expecting the same things as you, but here's what I would expect:
1. Another flat ride to go in UFO's spot
2. Some sort of new show line up like they have every year
3. The reopening of 'Cuda Falls
4. A retheme of Ride of Steel
I knew it, when they were saying that they couldn't "Spill the beans" just yet, that was one of the clues! Maybe they're going to put another Tim Hortons stand in the park.