In a Shimano patent uncovered by Better Shifting and detailed on its Instagram account, a new, fully wireless, 13sp groupset is hinted at that could well be the new Dura-Ace.
While a patent doesn't in any way guarantee a product will go into production, it at least hints at the general direction. In wireless terms, Shimano currently lags behind Campagnolo and Sram in that its electronic groupsets still rely on a partially wired connection. Bringing true wireless to Dura-Ace would bring parity on that front, and a 13sp rear cassette would also bring it level with Campagnolo as far as the number of sprockets go.
