Previously, the main reason not to have discs has been weight. Now that even an off-the-peg road bike can be below the minimum UCI weight limit of 6.8kg, that’s less of an issue.
Now there’s just the engineering issues to overcome and the fact that frames, forks and wheels will need complete re-designs to handle the mounting and the stresses of disc brakes. That’s going to be the biggest hurdle, getting it widely accepted and basically making EVERYTHING that has gone before (wheels/frames/forks wise) completely obsolete.
Oh and it has to be accepted by the UCI. Without that change to the UCI Tech Regs, the idea is going nowhere.
As to 11-speed, Shimano have done it the right way round. Electronic first, then 11-speed.