If Star Wars goes off without any major hiccups and crowds are really heavy for the first month and Disney thinks it will trend that way all summer they might try to increase the prices again. I wouldn't put anything past them. If you are sure your going I wouldn't risk it. I'd just buy them now.
Worst case scenario you get your tickets early and they don't increase their prices. Big whoop. But if you don't and they jack the prices up, then you will feel cheated. At least I would. In the past they would give people some warning and you knew ahead of time a day or two. But they ended that. I guess they don't want to leave one single dime on the table.