If the Macbook Pros are updated this spring would they upgrade the 13" with Arrondales and the 15 and 17" with Sandy Bridge??? I nobody "knows" for sure, just speculating. I am waiting to replace my iMac with a 13" Macbook pro. I replaced my 13" black macbook with the iMac and I would love to have the same portability with my new macbook pro, I just want to get out of the C2D era!!