There is prob nothing on the frame except from the cosmetics that is the same. Every thing on the frame has been tweeked to be better. If you put the mk1 and the mk2 next to eachother and look closely you can easily see the difference. The canoe, links, rear swingarm has totaly been rebuilt. It has titanium axles and is buttery smooth. The frame has a better feel to it than the old one. And is less progressive to be more smallbump active.
I have ridden the new one allot now, and gotta say it is the best bike i have ever ridden.