Web Self-Service Portal - XenServer administrators can delegate rights to select individuals, allowing them to request and access virtual machines via the browser. This technology could be based on the recent VMLogix acquisition.

VM Protection and Recovery - This could be the Citrix response to VMware's Data Recovery. This new feature offers policy-based snapshotting and archiving of selected virtual machines across a XenServer resource pool. Administrators can perform scheduling and recovery through the XenCenter management console.

HA Restart Priority - Administrators can instruct the system as to which virtual machines in the environment should be restarted first, and in what order they should be brough back online should there be a failure requiring reboot. As an example, a policy can be put into effect to start the StorageLink Gateway VMs or the Distributed vSwitch Controller VM before anything else is brought back online.

Boot from SAN with Multi-Pathing Support - Boot XenServer hosts with Fibre Channel and iSCSI HBAs from a SAN, with multipathing support.

Improved XenDesktop VDI Scalability - Increased host virtual machine density and resource pool scalability via multi-vCPU control domain (Dom0) and other enhancements.

Enhanced Guest OS Support - Windows 7 SP1, Windows Server 2008 R2 SP1, RHEL 6.0 (RTM), CentOS 6.0 (RTM), Oracle Enterprise Linux 6.0 (RTM), Debian Squeeze (32 and 64-bit), and SLES 11 SP1.

Some great improvements especially distributed virtual switching.