I have to say I'm surprised that updated Macbooks and Macbook Pros haven't been released yet. With the Intel transition, Apple finally seemed to pair its self-image as a premium producer with the products to match--using the cutting edge Intel processors and being the first to do so. Witness the iMac (twice!), and the Mac Pro and xServe. Why they're being so tardy on their strongest selling segment (laptops) is beyond me. Any prolonged delay risks tarnishing--slightly, but still palpably--their status as a provider of premium kit. It simply doesn't look good selling what are now, at least in the MBP price range, last-generation processors.
Having said that, my guess is for a quiet refresh of both laptop lines Wednesday. No announcement, just an update Apple Store.
Dunny