VirtualBox 4.1.0 Beta 1

# The following major new features were added:
* Support for cloning of VMs
* 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

# 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
* 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
* VRDP: support for TLS connections
* VRDP: support for multimonitor client configurations with MS RDP client
* 3D support: fixed GL_VERSION string for different locales
* Windows hosts: fixed copy’n’paste in the GUI and for the VM window
* Guest Additions: improved driver installation on Windows guests
* Guest Additions: fixed high CPU usage while executing guest programs from the host