XenServer 5.0 has not been released for that long, but already a minor update has occurred. XenServer 5.5 is out now.
While largely I think XenServer 5.5.0 is a release to address some general bugs it also adds improved support.
The features added as part of the update are:

Improved Backup and snapshot support
Active Directory Integration
Workload balancing
Improved operating [...]

MokaFive has released version 2 of their MokaFive suite. MokaFive was designed as a Desktop-as-a-Service (DAAS) platform for small to medium enterprises. Offering a tailored option in the hosted MokaFive Service so they don’t have to deal with deploying a server, maintenance and upgrades. This is a great option for small businesses who simply do not [...]