VirtualBox v4.1 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 v4.1 Beta 2 Changelog:

VirtualBox 4.1 Beta 1 relased by Frank Mehnert » 30. Jun 2011, 22:12 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. The packages are currently being uploaded. Please do NOT open bug reports at http://www.virtualbox.org/wiki/Bugtracker but use our VirtualBox Beta Feedback forum to report any problems with the Beta. Please concentrate on reporting regressions since VirtualBox 4.0.10. VirtualBox 4.1 will be a new major release. The following major new features were added: Support for cloning of VMs (bug #5853) GUI: enhanced wizard for creating new virtual disks GUI: new wizard for copying virtual disks VMM: raised the memory limit for 64-bit hosts to 1TB Windows guests: Experimental WDDM graphics driver Guest Additions: modules and features now are represented as facilities to have a common interface for frontends. New Networking Mode: UDP Tunnel. Allows to interconnect VMs running on different hosts easily and transparently, see the manual for more information. In addition, the following items were fixed and/or added: VMM: more SMP timer fixes VMM: fixed sporadic recompiler crashes with SMP guests VMM: many small fixes GUI: when reverting to a snapshot, ask for taking a snapshot of the current state GUI: added View menu GUI: added setting for the promiscuous mode policy for internal networks, bridged networks and host-only networks GUI: the VM description is editable during the runtime of a VM GUI: added proxy settings (bug #2870) VBoxManage: changed syntax of the guestcontrol command group, fixed various bugs VBoxBalloonCtrl: new service for automatic dynamic adjustment of the balloon size for running VMs Settings: machine names and snapshot names are not allowed to be a valid UUID Storage: virtual CD/DVD images will be detached if the guest ejects the medium Floppy: several bugs have been fixed BIOS: disk-related structures are now checksummed correctly USB: many fixes for the Windows USB host driver NAT: reduced memory footprint Serial: announce the serial devices in the ACPI tables to make Windows guests find the virtual hardware (bug #7411) VRDP: support for TLS connections VRDP: support for multimonitor client configurations with MS RDP client 3D support: fixed GL_VERSION string for different locales (bug #8916) Windows hosts: fixed copy'n'paste in the GUI and for the VM window (bug #4491) Guest Additions: improved driver installation on Windows guests Guest Additions: fixed high CPU usage while executing guest programs from the host

Download: VirtualBox v4.1 Beta 2
Source: Here