The New MacBook Pro resolution predictions.

13/15 inch - 2048 x 1536.

17 inch? Maybe - 3072 x 2304.

13 and 15 matching the new iPad's resolution, tying them further together for their inevitable (medium-long term) single OS. 17 inch, it's 1.5 times that again. Not overly sure of this, but it needs to be much bigger than the new iPad's as it's already close, and Apple generally likes to keep them working off the same sheet.