Cruise ship schedules are made a year, and usually more, in advance, so 2016 stops would already have been planned a long time ago. I tried to go to Disney's website and could not figure out their itineraries for the future, because there was some issue with my browser. I would be surprised if Disney doesn't come to SXM in future, but I do know that they have made a commitment to Tortola (which is a totally bad cruise ship destination, in my opinion, but they didn't ask me...)