Originally Posted by HansTWN
DRM does suck. But Amazon did give users several months notice. And there was no downside to upgrading K4PC, everything still worked -- including the tools.
The tools still worked this time. But at any time Amazon could disable the current Kindle for PC/Mac software, and implement a new encryption key algorithm with the update, breaking the tools.
So the sensible thing to do is to strip the DRM while you can, as you are doing.
It would be foolish for anyone to assume that the DRM will always be easy to strip.