We are pleased to announce the release of the XenDesktop 5 Migration Tool!  This tool allows admins to quickly and efficiently migrate their data from a XenDesktop 4 environment to XenDesktop 5.  Take a look at the following video outlining tool usage and these relevant links.

CitrixTV Video

eDocs Documentation

Tool Download Link
(Under Custom Download for each of the XenDesktop versions)

Knowledgebase Landing Article