VirtualBox v6.0 Beta 1 is released. VirtualBox is a general-purpose full virtualizer for x86/x64 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software.

VirtualBox v6.0 Beta 1 Changelog:
OCI Integration: implemented support for exporting a VM to Oracle Cloud Infrastructure
Improvents in GUI design
In addition, the following items were fixed and/or added:
Audio: implemented support for attaching / detaching VRDE audio drivers at runtime
Guest Control: various new APIs and features were implemented (see SDK documentation for more)
Networking: Added a workaround for older guests which do not enable bus mastering for the virtio PCI device
many unlisted fixes and improvements