VirtualBox v6.0 Beta 2 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 2 Changelog:
In addition, the following items were fixed and/or added:
Oracle Cloud integration fixes and improvements
User interface: many improvements
Audio/Video recording fixes and improvements
Devices: new BusLogic ISA variant
Devices: serial port fixes
BIOS: fixes
API: transparently resize disk images when merging if possible
Solaris: installer fixes
Windows Guest Addiitons: fix incorrect tablet co-ordinate handling with recent Windows 10 builds
Guest Additions: improved shared folder auto-mounting
OS/2 Guest Additions: initial shared folder support
Here is an incomplete list of changes in Beta 1:
OCI Integration: implemented support for exporting a VM to Oracle Cloud Infrastructure
Improvements in GUI design
User interface: greatly improved HiDPI and scaling support, including better using host HiDPI support, HiDPI icons, improved detection and per-machine configuration
User interface: major rework of interface style with improved ease of access for application and machine set-up
In addition, the following items were fixed and/or added:
User interface: video and audio recording can now be separately enabled
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