The links below are to articles that report on the ability to remove DRM from Kindle’s KFX format.

For more visit:
– https://the-digital-reader.com/2018/04/16/you-can-now-strip-drm-from-amazons-kindle-kfx-format/
– http://blog.the-ebook-reader.com/2018/04/14/alfs-drm-removal-tools-now-support-kindles-kfx-format/