Daring Fireball has, via Engadget, details on the new Macbook Pros to be announced today (which, to be fair, includes some speculation). I'd be surprised if his report was far off from the truth. Most of the updates are minor and/or cosmetic, like the switch to the Macbook Air-style keyboard, a new single-piece aluminum chassis, and a clickable glass trackpad. The biggest deal, to me, is the inclusion of two Nvidia GPUs, the 9400M and the 9600M GT.
Selfishly, the more people out there with computers with modern, high-powered GPU's, the smoother Hulu videos will play. Some users write in complaining about videos that stutter, and in most cases it's either a computer that can't keep up or problems in the network. The videos, I can assure you, play fine--it's an easy thing for us to test in-house to remove the variable of the network and the computer from the equation to test the underlying video.