[Forge]

So I'll attempt a summary for new readers/inquirers, please correct me if I get anything wrong:

Amazon used to deliver books in azw3 to all their devices, the DRM got properly and widely compromised, and this was a golden age for DeDRMing your books and keeping a safe copy, in hindsight.

Amazon shut down the "download and copy to Kindle" options, since they used azw3. Amazon also rolled out original kfx, which took a long while to get properly compromised and added to the DeDRM solutions, and this was the most common format until recently.

Now if your Kindle is running 5.18.5+, you get a gen 2 kfx, which is once again difficult to DeDRM. They are also either killing off or shutting down or replacing the oldest options to close the last remnants of the azw3 path. Books are also being provided in gen 2 kfx and "legacy" kfx downloads sometimes fail or show unavailable on pre-5.18.5 devices.

If Amazon rolls out a new PC/Mac app, it'll likely be locked to kfx gen 2 only, all the non-EOLed Kindles are supposed to have or be moving to gen 2 kfx.

Certainly sounds like Amazon is confident in the long term security of the new gen kfx, and want to kill off anything that has a good reason not to be gen 2 kfx compatible (all Kindles without current firmware as an option, the older PC/Mac apps, etc).

Makes me wonder how long my Colorsoft and PW12 on 5.18.4 and jbed will last, before I get errors on all downloads. Not a good time to be an Amazon customer and pro-user-rights!