In conjunction with the new VirtualBox release, Oracle also kicked out Release 2 of its Enterprise Manager 12c control freak for physical and virtual servers and the systems software and applications that run atop them. So, separate question: who wants a VirtualBox hypervisor for ARM machines? New enterprise control freakage You can get binaries (governed by the GPL v2 license) for free here for Windows, OS X, Linux, and Solaris hosts running on x86 gear. Oracle VM VirtualBox Enterprise costs $50 per seat, plus $11 per year for technical support and updates. New with the VirtualBox 4.2 release is support for Apple's Mac OS X 10.8 (aka Mountain Lion) operating system, as is support for Microsoft's soon-to-be-launched Windows 8 and just-announced Windows Server 2012, Oracle's Linux 6.3 (a RHEL-ish clone), Solaris 11, Ubuntu 12.04, and Fedora 17. The improved management screen for VirtualBox 4.2

The Nano X2 supports Intel's VT-x virtualization extensions, but VirtualBox had no idea what the Nano X2 processor was before release 4.2. There are a slew of bug fixes in the hypervisor, and VirtualBox will now run on the Nano X2 x86 chip from VIA Technologies. The hypervisor can now fire up VM guests automagically at system boot time if they are running Linux, OS X, or Solaris support for Windows guests for automatic VM boot is not yet ready. In the future, this capability will also be added to other host-guest OS combinations. With the 4.2 release, if you are running VirtualBox on a Linux host, you can now drop and drag from the host OS to the guest Linux OSes running inside VMs.

VirtualBox hypervisor is not a bare-metal or type 1 hypervisor, as they are called in the virty lingo, but rather a hosted or type 2 hypervisor that runs atop an operating system and then in turn hosts virtual machines that run independent operating systems. Screenshot of Oracle VirtualBox 4.2 running on Mac OS X

Oracle virtualbox on windows 8.1