Citrix CCA 4.0 4.5 5.0??

The Citrix CCA for Presentation Server has gone through some changes. I think I'll be taking the 259 test in a week or 3. There's some confusion over what the current test covers and what test(s) are required for the CCA cert. Citrix has removed the requirement for the online elearning session. So all you have to pass is the 259 test and it covers 4.5 and 5. There is some talk about 5.0 on windows 2003 is just 4.5 plus a patch. I'm not sure I agree with that, but can't offer any facts to back that up. Maybe one of you can comment.