It's FOSS - https://itsfoss.com/libreoffice-6-0-released/
Brief: The latest major release of LibreOffice brings better interoperability with Microsoft Office documents, ePub export, OpenPGP document signing, improved user interface and a number of other functional improvements.
The best open source office suite has got even better. LibreOffice 6.0 has been released today, on the seventh anniversary of the first stable release of LibreOffice. The new release brings a number of improvements and new features. The Document Foundation calls it a “dramatical improvement” over its predecessors.
LibreOffice 6.0 is the first major release of LibreOffice with the last one being 5.4 in July last year.