During Citrix Synergy this today, Citrix announced the release of a technical preview for the second version of their client hypervisor XenClient, and also introduced a new type supporting advanced levels of security, isolation and performance with extreme client computing requirements called XenClient XT. Version 2.0 is the follow up of version 1.0 which was released in September last year as part of XenDesktop 4.0 Feature Pack 2.
The Citrix XenClient 2.0 technical preview is available as of today.