Lots of new bikes coming out with 50mm (aka 2") tire clearance. The Ibis Haka MX for one. With 700c wheels it only has room for 40mm but will handle a 650b x 50mm tire.
The 2020 Niner RLT RDO will have room for a 700 x 50mm tire.
Yeah the industry is definitely going fat. Even the mountain bikes are going fatter with 27.5" (aka 650b) x 3" tires. My new Scott MTB is setup with 29 x 2.6". k.
Lots of bikes take 650b x 50mm, I have a friend who was looking at the Cutthroat and wondering about alternatives, and that’s a smaller selection.
Good to hear there is more coming out. Shimano GRX and growth of 1x might have to do with that, since bike makers can now fit a fatter tire in the rear of the bike than with traditional road drivetrains.
i disagree a bit about the Mtb, 27.5 x3.0 is dead as a dodo, even 27.5 x2.8 is fat less popular than it was a few years ago(which I find unfortunately, because for me, and many like me, it’s a great option).