Microsoft has changed their licensing so that they are more “friendly” to competing hypervisor products. This also extends to their support of their products on other hyper-v platforms which currently are Xen, VMWare and Novell’s virtualization product.
While they are supporting several additional virtualization platforms they are not extending this level of support to all of their products. For a complete list and the press release see the links below.
List of Supported Products
Microsoft Press Release
Microsoft Support Article