As @Jaap pointed out to me, you can quite clearly see a cable. So definitely not wireless. Maybe that's why it was deleted.
It can't be wireless as per SRAM derailleurs because of SRAM patents. So Shimano will have to use a different approach .. the semi wireless one ?
I'm sure SRAM would consider a licensing agreement.
@user87951 started
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As @Jaap pointed out to me, you can quite clearly see a cable. So definitely not wireless. Maybe that's why it was deleted.