I just picked up an 08 Trek Top Fuel 9.9 SSL on super blowout at a shop.
Indeed, the 08 Top Fuels do not have the 08 Fuel EX's ABP rear suspension...
But I figured that the rear suspension advance wasn't worth the $3000+ difference in price from the 08 to 09 Top Fuels...
Will I notice the difference? I'll never know because I haven't ridden an ABP suspension yet....oh well....The 08 Top Fuel is VERY nice though...completely satisfied with it!