Basically it looks like the 1:18 2008 edition if the Tumbler that originally came out in 2005. (Was it really that long ago?) http://www.play.com/Gadgets/Gadgets/4-/717873/Batman-The-Dark-Knight-Batmobile/Product.html# Anyway, apparently the key difference is the front wheels appear to be steerable, and connected to a steering column. I'd also hope that the canopy opens better than the previous one. But all I can really tell from the pictures is the rear wheel gold trim is slightly different. Anyone have any more info on this?
I don't have any info on-hand, but I'm connected through the Hot Wheel and Diecast community, I'll find out for you.
Sweet, I looked all around google and eBay, and found nothing about a steerable 1:18 Tumbler. All I could find were references about the 2005 one, which I already have. I'd get this in a flash, except I can't even find an email address for Play to ask them specifics about it. Which is weird.