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 can download the binaries here.

Please do NOT open bug reports at http://www.virtualbox.org/wiki/Bugtracker but use this forum to report any problems with the Beta.

We have gone through some effort to keep existing VM configuration files untouched with this new beta. This implies it´s easier to go back to an older version. There are exceptions though. If you change a setting that requires an incompatible change to the configuration file, then its internal version will be increased and you will not be able to use it with an older version of VirtualBox. We recommend that you backup all your XML files before evaluating this beta.

Notable changes since VirtualBox 3.1.0 Beta 1:

* Fixed snapshots of VMs with empty DVD attachments (3.1.0 Beta 1 regression)
* Fixed snapshots of VMs with multiple attached disk drives (3.1.0 Beta 1 regression)
* GUI: fixed a snapshot in the snapshots widget
* VMM: guest SMP fixes in rare cases
* VMM: fixed kernel panic with older Linux kernels, e.g. CentOS 5.3 (APIC; 3.0.12 + 3.1.0 Beta 1 regression)
* 3D support: fixed Final frame of Compiz animation not updated to the screen (public ticket #4653, partly fixed, needs more work)
* 2D/3D support, Windows: fix gl support test failure when VBox installation path contains spaces
* 2D support: fix saved state restore failure when 2D is active and used by the guest (Playing a Video)
* Creating a new VM sometimes failed (3.1.0 Beta 1 regression)
* VBoxManage clonehd was broken if the same image was cloned concurrently
* added VBoxManage usage information for Floppy/DVD images
* Linux Additions: properly disable the seamless mode if the guest doesn´t support it
* Windows Additions: fixed high usage of VBoxService on Windows guests (3.1.0 Beta 1 regression)
* Windows Additions: VBox Credential Provider fixes
* Windows guests: fixed invisible mouse pointer when VM was restored from a saved state.
* VirtIO: performance improvements
* EFI: 32-bpp VGA driver was added.


See the announcement for the first Beta.