http://www.traxxas.com/products/nitro/5907slayer/trx_5907slayer.htm
Longer and wider. Should be a big improvement over the original.
I was going to sell my ERevo until I saw this. The wheelbase on the Pro is real close to the ERevo. As soon as the EBay parters start selling Pro parts, I am going to convert my ERevo and see how it works.