Last I checked, MS is busy trying to oust both VMWare and Xensource with it's own virtualization platform.

Though, in the hoes of preventing (my own) panic, Citrix wouldn't own the Xen hypervisor correct? There's nothing they can do legally to close the source code off? I'm kindof using that code...

They can't close off existing xen code, nor would it be convenient to improve the code without returning those improvements to the community, etc etc. Cos it is all under a nice license, right?

This relationship has got to be screwed now anyway - the new version of windows server will support single-serve applications in a citrix style format.

Though of course, you've been able to do this for ages for free with RDesktop and SeamlessRDP...

Both depend on one and eachother and they won't go hurting eachother either.

MS conviently announced a delay of around a year in their 'advanced' TS features as Citrix delayed their version which can put Lunixapps next to Window apps.

http://www.brianmadden.com/content/article/Are-Citrixs-Linux-Strategy-and-Microsofts-Bear-Paw-Strategy-Related

Just have a peak there.