VirtualBox v3.0 Beta 1 is released.VirtualBox is a general-purpose full virtualizer for x86 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software.

VirtualBox v3.0 Beta 1 changelog:
Version 3.0 will be a major update. The following major new features were added:

* Guest SMP with up to 32 virtual CPUs (VT-x and AMD-V only)
* Windows guests: ability to use Direct3D 8/9 applications / games (experimental)
* Support for OpenGL 2.0 for Windows, Linux and Solaris guests


In addition, the following items were fixed and/or added:

* Virtual mouse device: eliminated micro-movements of the virtual mouse which were confusing some applications (bug #3782)
* Solaris hosts: allow suspend/resume on the host when a VM is running (bug #3826)
* Solaris hosts: tighten the restriction for contiguous physical memory under certain conditions
* VMM: fixed occassional guru meditation when loading a saved state (VT-x only)
* VMM: eliminated IO-APIC overhead with 32 bits guests (VT-x only, some Intel CPUs don’t support this feature (most do); bug #638)
* VMM: fixed 64 bits CentOS guest hangs during early boot (AMD-V only; bug #3927)
* VMM: performance improvements for certain PAE guests (e.g. Linux 2.6.29+ kernels)
* GUI: added mini toolbar for fullscreen and seamless mode (Thanks to Huihong Luo)
* GUI: redesigned settings dialogs
* GUI: allow to create/remove one host-only network adapters
* GUI: display estimated time for long running operations (e.g. OVF import/export)
* GUI: Fixed rare hangs when open the OVF import/export wizards (bug #4157)
* VRDP: support Windows 7 RDP client
* Networking: fixed another problem with TX checksum offloading with Linux kernels up to version 2.6.18
* VHD: properly write empty sectors when cloning of VHD images (bug #4080)
* VHD: fixed crash when discarding snapshots of a VHD image
* VBoxManage: fixed incorrect partition table processing when creating VMDK files giving raw partition access (bug #3510)
* OVF: several OVF 1.0 compatibility fixes
* Shared Folders: sometimes a file was created using the wrong permissions (2.2.0 regression; bug #3785)
* Shared Folders: allow to change file attributes from Linux guests and use the correct file mode when creating files
* Shared Folders: fixed incorrect file timestamps, when using Windows guest on a Linux host (bug #3404)
* Linux guests: new daemon vboxadd-service to handle time syncronization and guest property lookup
* Linux guests: implemented guest properties (OS info, logged in users, basic network information)
* Windows host installer: VirtualBox Python API can now be installed automatically (requires Python and Win32 Extensions installed)
* USB: Support for high-speed isochronous endpoints has been added. In addition, read-ahead buffering is performed for input endpoints (currently Linux hosts only). This should allow additional devices to work, notably webcams
* NAT: allow to configure socket and internal parameters
* Registration dialog uses Sun Online accounts now

Download: VirtualBox v3.0 Beta 1
Source:Here