Get ready for touchless shifting or even voice activated, plus more tech developments:
https://road.cc/content/tech-news/SRAM-Rapha-Assos-Hunt-Syncros-Pirelli-302661
Did Di2 solve any particular problem?
Other than it won't be working in 30 years when you can't replace the 'wires'.
Just as well in some cases:They are well-known for patenting all sorts of things with the suspicion being they are merely trying to insure they get a cut of the pie should anyone get the ideas to work and to market.
So if I say "What f@@@@@ng gear am I in, it will tell me lol