Shimano's next upgrade will be Dura-Ace 8000. 7900 was just a "holdover".
They're just waiting for Campy & SRAM to blow their loads first,
then, as usual, they'll introduce a simple clean system that will just
do what cyclists want and need from a groupset...perform flawlessly.
Electronic shifting?
Why?
I almost feel like it's a gimmick to distract us from what's coming down the pike.
Don't know about you guys, but when it comes to Shimano, my Spidersense is tingling!
Their XTR group is wicked smaaht. 7900 didn't improve as much as XTR did. 8000 is around the corner.
Shimano, listen...give us 7800 reliability & simplicity, 7900 tweeks and SRAM Red weight.
"F" the carbon on parts that should be all metal. AND chill with the price already!
Oh, and make it all easily tunable and maintainable with basic tools.