Saw this elsewhere. Will be a long time before they become a regular feature though. What I read suggested if all goes well it will be 2017 by the time they are UCI legal. Allow a little longer for trickle down to the masses for racing*. Likely plenty of pros won’t switch in any case unless there are massive advantages. Discs have been legal in CX for a while but when you look at the bikes the majority are still on cantis in the world cup.
Use of discs will see a lot more carbon rims on the road as well. Again, if my roadie had discs then carbon rims would be a no brainer.
Bike looks nice, rear caliper position means clean seat stays without the disadvantage of having a standard caliper down by the BB where it gets covered in spray and muck off the road.
*Only thing stopping my next bike having hydro discs is the fact I want to continue doing BC road races.