Citrix has released the latest version of Citrix Provisioning Services, version 5.1.  The product also had a name change, now called "Services" as opposed to "Server" to better reflect what PVS really does.  

You can download Citrix Provisioning Services from the Citrix Downloads section.

Here is a list of whats new in this Release:

• Standard Image Mode NIC Teaming
  Ability to use NIC teaming drivers for Broadcom and Intel NICs to setup 'teams'
  on PVS Target devices.

• Offline vDisk Maintenance
  Ability to boot PVS VHD files directly within Windows Virtual Server and Hyper-V.

• User Assigned Virtual Disks
  vDisks are assigned to existing user groups rather than machines.

• Offline DB Support
  Ability for PVS to continue to boot and run Target devices if the database
  becomes unavailable.

• Multiple Partition vDisks
  Ability to create vDisks that include multiple partitions (e.g. both a C: and D:
  drive).

• Server Maintenance Mode
  Ability to initiate failover of all Target devices attached to a particular PVS Server
  to other servers in the PVS farm.

• Enhanced Logging
  Enhancements to our current logging both on the server and the Target devices.

• Auditing
  Ability to keep a log of actions performed by system administrators.

• Read-only vDisk Storage
  Modifications that allow a vDisk to be stored on a read-only file system.

• XP Embedded Streaming
  Ability to provision MS Windows XP Embedded