Not long after releasing VM VirtualBox version 3.2.12, Oracle announced the first beta for VirtualBox version 4.0, which will be a new major release. As of this version VirtualBox will introduce Extension Packs which Oracle and 3rd parties can use to delivers additional functionality to the product. Oracle will release the Oracle VM VirtualBox Extension Pack which adds support for USB 2.0, RDP Server and the PXE bootloader with E1000 support.
Also intoduced with version 4.0 is a different licensing mechanism, the H reports . Both the product source code and the binaries will be licensed under GPLv2, The Extension Pack mechanism will be licensed under the VirualBox Personal Use and Evaluation Licence (PUEL), which means that distributors shipping the Open Source Edition of VirtualBox no longer need to build from the sources themselves.
