
Features of VirtualBox are:
Improved Windows 8 support, in particular many 3D-related fixes
Virtual machine descriptions in XML
GUI: VM groups
GUI: expert mode for wizards
GUI: allow to alter some settings during runtime
Support for up to 36 network cards
Resource control: added support for limiting network IO bandwidth
Added possibility to start VMs during system boot on Linux, OS X and Solaris
Added experimental support for Drag'n'drop from the host to Linux guests
Download Location: VirtualBox 4.2.0 RC1