This year has more than enough. Tron and GotG could easily open simultaneously if they so desired, which I think would be a pretty awesome marketing campaign.
Their marketing is going to be nuts for the 50th. They’ll still get to pimp avatar out, Star Wars/hotel, toy story, MMRR, rat and both coasters. Not to mention whatever events and stuff they’ll have. It’s a good time to be a Disney fan... if you can afford it, of course.