VirtualBox v5.1.0 is released. VirtualBox is a general-purpose full virtualizer for x86/x64 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software.

VirtualBox v5.1.0 Changelog:
* Improved Performance: Significantly improved performance for multi-CPU virtual machines and networking.
* Bug Reporting Tool: New utility able to collect all the information and logs related to the host and guest operating system, for debug or analysis purposes.
* Improved Logging Window: New logging functionalities to highlight and filter information related to guest Virtual Machines.
* Improved multimedia availability: Improved support for different USB devices and multi-channel audio availability.
* Flash storage emulation: New NVMHCI storage controller emulation available, able to emulate NVME devices - Flash storage - on guest Virtual Machine.
* Improved Linux integration: Automatic modules deployment in case of a Linux Kernel upgrade and improved systemd integration for the latest releases of popular Linux distributions.

Download: VirtualBox v5.1.0
Source: Here