Ubuntu 11.10 launched yesterday and we have been testing the GA version as both a host and guest OS for VMware Workstation 8.0. So far, most of the core features are working, but we are aware of a few issues that we will fix in an upcoming maintenance release. Please report any issues you find via a service request or the community forums.
Even the Unity desktop appears to be working! Please don't be fooled by this, 3D support for Linux guests is not enabled… yet…. Ubuntu has updated their standard desktop UI with the new graphical interface which is what is being displayed.