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Some sort of licensing issue preventing Shimano from using XD apparently. I'm alright with it actually if it becomes the new standard, changing a freehub is for the most part not too difficult and I would definitely make use of a 10t cassette. As long as they produce 11-32s and other normal cassettes as well I'd have it on all my bikes
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Some sort of licensing issue preventing Shimano from using XD apparently.
Seems unlikely. SRAM offer a free licence to use the XD proprietary IP, provided you sign a copy of a licence agreement.
The power that Shimano have in influencing standards mean they'll possibly stick.
That said, Sram have had the XD driver out for quite some time now