A Market Void: Multi-Tenant VDI Solutions | ThinkVirt:

Contrary to what your favorite vendor sales rep may tell you, the two major VDI players, Citrix and VMware, do not have an out-of-the-box multi-tenant VDI solution

An insight into the presently lacklustre state of multitenant VDI (not session based desktops) and a glimpse into what this playing field will look like in 2012.

Agree 100% with the author that there is a real market – the first reputable vendor to pull this off (or acquire a startup that does) will have service providors and large corporates clamouring for their product.