Among the highlights:* The new Sun livery* Solaris and Mac versions no longer in beta* Guest Additions for Solaris* Seamless windowing for Solaris and Linux guests* SATA support for up to 32 hard disks per VM (first product in the industry to do SATA!)* PAE support for guests (memory model required by some server OSes)…
http://www.ubuntu-unleashed.com/2008/05/virtualbox-160-just-released-for-ubuntu.html