SRAM's universal hanger concept could make coaxial mounted (hangerless) derailleurs a thing (again) - Bikerumor
James Huang on Twitter: "Direct-mount rear derailleur hangers are very rare on consumer-spec road bikes, but they're on more than half of the Shimano-equipped bikes at the Tour. Why? https://t.co/jN22raSFiH https://t.co/fRukDgnYPP" /
There's a flood of Direct Mount derailleur hangers at the Tour de France — but why? - CyclingTips
Shimano Officially Introduces Direct Mount Rear Derailleurs - Pinkbike
Rear derailleur Direct Mount or Not : r/bikewrench
Rear Mech fitment, what are the different versions? | Mountain Bike Reviews Forum
Shimano: New hanger is O-P-T-I-O-N-A-L | Bicycle Retailer and Industry News