Here's a link to the 2008 Outlook Buyers Guide that shows all changes for the next model:
And A Summary of changes:
Exterior paint color (62U) Charcoal
Exterior paint color (12U) Garnet
Exterior paint color (58U) Carbon Flash
(DK1) Second row console, available on XR models with (ABB) 7-passenger seating
(UVC) Rearview camera system, included and only available with (U3R) AM/FM stereo with MP3 compatible CD player and DVD-based navigation or (UZR) AM/FM stereo with MP3 compatible CD/DVD player and DVD-based navigation
(UD7) Ultrasonic Rear Park Assist is now included and only available on all models with (PDC) Convenience Package. (Previously only available on XR models with (PDC) Convenience Package.)
(U2K) XM Satellite Radio is now standard on all models.
(KV1) 115-volt 3-prong household-style power outlet is now included and only available with (PCU) Advanced Audio Package.