This one is a bit of a roots build- 26" wheels, QR rear axle and IS tab for the disc brake.
This is not the first or last 26" MTB frame of the year- it seems like there's a bit of a revival going on- not so much for cross country rigs like this but more for dirt jumpers . I built one a couple of months ago and I will be building another one soon.
This frame is built for a 100 MM fork and 2.3" tires, although it looks like the owner will more likely run 2.25's most of the time. This frame was really fun to build and I'm really happy with how it came together. I even got to use some rare single bend Columbus short taper chain stays.