added SCSI CD-RO M emulation, including boot support.introduced a lightweight instruction interpreter for situations not handled by hardware virtualization.major rewrite of the VT-x code and the AMD-V code including many bug fixes and performance improvements.In addition, the remote display server built-in to Oracle VM VirtualBox can accommodate RDP connections over IPv4 and IPv6 networks. IPv6 is now offered across Bridged, Host-only, Internal and the new NAT networking modes. Networking improvements: A new Network Address Translation (NAT) option allows virtual machines to talk to each other on the same host, and communicate with the outside world.For easy playback, movies are created in WebM format by a range of movie-players.

New recording session capabilities allow users to record part, or all, of a virtual machine session using a new video-capture facility. New devices and management utilities: A new virtual USB webcam device enables video conferencing applications such as Skype or Google Hangouts to run in virtual machines.Additionally, improved 3D acceleration accommodates the translucent effects in the latest Linux distributions from Ubuntu and Fedora, and enhanced multi-monitor support allows users with multiple screens to use them from within the virtual environment. For Windows 8.1, the new release can also simulate a 10 point multi-touch device. New operating system platform support: Oracle VM VirtualBox 4.3 supports the input device features, of the latest platforms such as Windows 8.1, Windows Server 2012 R2 and Mac OS X 10.9 in a virtual environment.Oracle VM VirtualBox 4.3 provides support to run the most modern guest and host platforms. Multi-touch Interface Supports Latest Touch-based Windows Operating Systems Oracle VM VirtualBox 4.3 introduces a virtual multi-touch user interface, supports additional devices and platforms, and provides enhanced networking capabilities enabling developers to virtualize modern post-PC era operating system features while maintaining compatibility with legacy operating systems.

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