[Waylander]

Does all this mean that I can't "download and transfer via USB" AZW3 from Amazon to use with the 7-inch Paperwhite as I do currently for the 6.8-inch? I do this and use Calibre for storage/organisation/editing, plus de-drm. Is this still possible for the 7-inch Paperwhite or not?

Update: So, having dug around a bit, it seems none of the 2024 devices actually have the "download and transfer via USB" option on the "Content" page on the "Devices and Content" section. But if you have Kindles before the new generation that option is still available, so if you're thinking of upgrading, KEEP YOUR OLD KINDLE, as I will be with my 6.8-inch PW. Also, on a Mac, like I have, you'll need a programme like OpenMTP to sideload fonts, as for some reason the Mac file explorer doesn't recognise the 2024 Paperwhite. Hope this helps.