Other than color choices, there isn't any real difference between the 2007s and 2008s.
The 2007 Bermuda Blue is being replaced by 2008 Blue Granite; 2007 Sport Red is being replaced by 2008 Ruby Red (same color, just more metallic).
Pricing is changed so little as to not be a difference.
Z71 package went from $1795 to $1820, Rainsence & Heated wiper fluid went from about $220 separate to $200 for "Convienence Package #2".
See all the after market accessories for Chevy Avalanche at
www.AvalancheAndAccessories.com
