Tapping into storage device revenue is irritating, upgrading my One X to SSD storage was a faff due to partition UUIDs having to match factory templates. Ever since X360 they've had completely arbitrary requirements for HDDs and optical drives, there's absolutely no benefit for the consumer from this arrangement.
That case is just going to be an adapter with some built-in DRM. Hard to believe that Sony of all companies is the consumer friendly vendor in consoles, a company which stuck to their guns with MemoryStick for so long, and only recently caved in completely to SD cards.