I have a strong suspicion this is a 650b bike. Plus Matthew Slaven races for Kona and is clearly not riding a bike from their current line up. Math = 2014 650b Kona Process.
Spyshots, first look at 2014 Kona Process 650b
Kona Factory enduro racer, Matthew Slaven, leaves the mud and Sasquatch behind to shred some flowy, rocky, cliff-side trails in the sun. Spring is here and it's time to ride! Credit: Miles Sullivan and Cory Tepper