I wouldn't be surprised to see a small adjustment over the summer. A price reduction would make the most sense, especially for the 15". The value is pretty bad right now, 2k$ for a laptop with integrated graphics is a hard sale. I suspect Apple sells lots of laptop to college students over the summer, it would make sense to have a competitive line-up leading to that.
Hopefully, the retina panels are dropping in price as more manufacturers are using them.