SRAM are currently researching hydraulics.
The reason I don't think disc brakes will end up on road bikes anytime soon is because they won't become race legal and manufacturers would neglect to work on something that can't be fitted to pro race bikes, which undoubtedly influence people's choice in bikes/componentry.
I could be completely wrong I don't work on the development team at Shimano
SRAM are currently researching hydraulics.
The reason I don't think disc brakes will end up on road bikes anytime soon is because they won't become race legal and manufacturers would neglect to work on something that can't be fitted to pro race bikes, which undoubtedly influence people's choice in bikes/componentry.
I could be completely wrong I don't work on the development team at Shimano