This is news to everyone then because as far as we know the YZ-2 was developed specifically for high-traction surfaces, including carpet. that they've retooled it slightly is something else, but there is very little difference outside the transmission itself. All the news I've read explains that the updates for both the Dirt & Carpet Editions bolt directly onto the current original chassis which is why I find it odd for it to state it has a new chassis.
http://www.rccaraction.com/blog/2016...turf-editions/