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
but use our 'VirtualBox Beta Feedback' forum at

to report any problems with the Beta.

Version 3.1 will be a major update. The following major new features were

 * Teleportation (aka live migration); migrate a live VM session from one
   machine to another
 * VM states can now be restored from arbitrary snapshots instead of only
   the last one, and new snapshots can be taken from other snapshots as
   well (aka branched snapshots)
 * 2D video acceleration for Windows guests; use the host video hardware
   for overlay stretching and colour conversion
 * The network attachment type can be changed while a VM is running
 * Experimental USB support for OpenSolaris hosts making use of the latest
   USB enhancements in Solaris Nevada 124 and higher
 * Significant performance improvements for PAE and AMD64 guests (VT-x and
   AMD-V only; normal (non-nested) paging)
 * Experimental support for EFI (Extended Firmware Interface)

See the ChangeLog

for a complete list of all changes.

Kind regards,

Dr.-Ing. Frank Mehnert

Sitz der Gesellschaft:
Sun Microsystems GmbH, Sonnenallee 1, 85551 Kirchheim-Heimstetten
Amtsgericht München: HRB 161028
Geschäftsführer: Thomas Schröder, Wolfgang Engels, Wolf Frenkel
Vorsitzender des Aufsichtsrates: Martin Häring

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