This URL says that a new version was released:
vSphere Data Protection 5.1.11 Release Notes
I went to downloads and the only upgrade I see says this:
VMwareVDPUpgradeFrom61To-6.1.82-57.iso
File size: 1.9G
File type: iso
Release Date: 2013-06-06
Build Number: 5.1.11.3
VMware vSphere Data Protection Advanced - Upgrade ISO
Upgrade ISO image for VMware vSphere Data Protection Advanced.
Use this ISO image to upgrade from a previous build of VMware vSphere Data Protection.
I am running version the standard version but the notes above say this is for the advanced version?