Re: UHD Blu-ray is already sunk
@Cynic_999 of course you are right, however if you sell such a card which does not match specification of SD Association, then you cannot call it SD card. It will look like one, but it will not behave like one, thus confusing customers. This is because filesystem (as well as partition table format) is part of the specification. Also, different filesystem would buy you exactly nothing.