This major release includes a huge list of improvements and enhancements for Oracle VM VirtualBox 6 Release
Simon Coter writes in an Oracle News article
, "Please do NOT use this VirtualBox Beta release on production machines. A VirtualBox Beta release should be considered a bleeding-edge release meant for early evaluation and testing purposes.
You will shortly be able to download the binaries. Please use sha256sum to compare the hash of the downloaded package with the corresponding hash..."