The links below are to articles reporting on the latest news and updates relating to the Calibre open source software ebook management tool.

For more visit:
– https://blog.the-ebook-reader.com/2019/10/05/calibre-version-4-0-released-with-new-ebook-viewer/
– https://the-digital-reader.com/2019/10/06/users-hate-calibre-4-0s-new-ebook-viewer/
– https://the-digital-reader.com/2019/10/06/did-you-know-calibre-can-make-epub-3-ebooks/