Xenapp 5.0 Vs Xenapp 6.0

Xenapp 5.0	Xenapp 6.0
Policies are created using Xenapp Advanced configuration console	Policies can be created and configured both using Group Policy Managed console and/or directly out of the Citrix Delivery Service Console. The policies are logically now divided in two parts: computer and user. Policies assigned to Server / Farm properties comes under Computer policies. Policies assigned to user sessions comes under User policies.
Available via Java console	XenApp tasks are now available within a MMC 3.0 based console, named Citrix Delivery Services Console single console for all tasks.
There is no concept of Worker groups	Worker groups can create a group of XenApp server (based on a OU, AD Group or XenApp Farm servers). This workgroup can be assigned to policies, Load Balancing Policies and published applications. When you add a new server and assigns this one to the worker group it automatically will be configured using the policies and host the published applications configured.
Load evaluators are assigned to servers & applications	Load Evaluators are no longer assigned to servers,  but to Worker Groups or OUs.
Not Applicable	With XenApp 6 it is also possible to stream App-V virtualized application to client running the Citrix Streaming Client/Receiver
HDX includes think of speedscreen, ICA compression and progressive display	HDX RealTime : Which improves audio quality to CD quality level, VOIP echo cancellation and support for Microsoft Office Communicator (LAN based only).
XenApp 5 allowed for USB-attached flash and disk drives to be linked to XenApp sessions.  Users should logoff and logon again to have USB devices detected	HDX dynamic USB plug and play support is added : This makes it possible to add USB devices (cameras (including Webcams), microphones, headsets) into the client, while the user has already a XenApp session running
Software need to be installed separately	Role based installation which enables easy and simple migration to the latest XenApp platform