The latest generation, Kindle Paperwhite, Kindle Scribe 2, Kindle Scribe 1, and Kindle and the upcoming Kindle Colorsoft, all have something in common. When you plug them into USB into your PC or MAC, they no longer appear as external drives. This prevents users from using file managers to back up their books or to sideload new books onto the Kindle. Amazon has also removed the download and transfer via USB option for purchased ebooks from the content page. This will likely prevent people from stripping the DRM from the books and sharing them on piracy websites. This is not
Specifically:
For anyone else who’s confused at the title
Critically, while they wont appear as drives, they will appear as MTP devices (the same way Android phones do) and will still allow you to transfer files. The communication protocol is different, but “New Kindle e-readers no longer appear on computers” isn’t true unless your OS of choice doesn’t support MTP.
Ok, but can you still transfer your own books through MTP?
Yes, including EPUB files