so apparently Hammerhead makes a smartwatch-esque handlebar-mounted computer that integrates with Shimano bicycle hardware, but they're having some kind of contract dispute..?
not a long article, but the relevant parts seem to be:
> At the request of Shimano, [...] software update on June 2nd [...] will remove on-screen battery status and shifter mode data, front and rear derailleur indications, and Karoo screen control via the Di2 hood buttons from Shimano Di2 drivetrains.
> Shimano has withdrawn permissions [...] until we are able to forge a new agreement.
not a long article, but the relevant parts seem to be:
> At the request of Shimano, [...] software update on June 2nd [...] will remove on-screen battery status and shifter mode data, front and rear derailleur indications, and Karoo screen control via the Di2 hood buttons from Shimano Di2 drivetrains.
> Shimano has withdrawn permissions [...] until we are able to forge a new agreement.