Compact Flash revisions weren't used in devices the moment their specs were officially ratified either.

Same with PCIe versions (where are they now, PCIe 7 is penned I believe, yet 5 is whats being used, hardly by consumers, yet clamored for where the real computing is happening)

Instead of beating the drum of "no devices exist yet" how about how the new standard compares to the CFexpress and SDXL alternatives we do have, and how it could possibly change things once adopted.

Seems needlessly defeatist, like most basic consumers who happen upon a texh article on something they wouldn't wrap their head around, let alone use.

It's a chicken or egg problem
SDexpress was touted for years now
But nobody has made one available until now
So camera manufacturers didn't bother using it