I took the 1Y1-A05 (Implementing Citrix XenApp for Windows Server 200

beta on Wednesday and thought I would give a quick summary for anyone (you know who you are) interested in taking it.
179 questions (Citrix beta exams are longer than production exams)
The exam is based on the XenApp 5 Release Candidate (not the RTM) and covers the same objectives as the Presentation Server 4.5 Administration (1Y0-259) exam. It's mostly focused on Windows Server 2008 implementations (since there are few changes to the XenApp 5 for Windows Server 2003 release). Make sure you know the changes to the supporting components (Web Interface, Access Suite Console, etc) and the new features added to the 2008 implementation and you'll do fine. Oh and make sure you know the new names for everything!

All in all I think I passed, but I'll have to wait a few months to find out.