Citrix announced that they renamed Citrix Presentation Server (CPS) to XenApp Server!!
Citrix made a huge investment in XenSource (Citrix acquisition of XenSource with 500 million dollars) not only to compete in the Server Virtualization market but to be the out of the gate leader in the Virtual Desktop Market. In order to do this they need to build value around the name Xen – and make it the most recognized name in virtualization.
When you are talking about Application virtualization (server or client side) you are talking about XenApp, when you are talking about Server virtualization you are talking about XenServer, and when you discuss virtualized Desktops you are taling about XenDesktop.