VMware have now released vSphere 4.1, and one of the first questions I was asked was "Will the VCP and VCAP4-DCA exams now be based on 4.0 or 4.1?" - so here's what I've found out so far...
VMware continually reviews the impact of major and minor releases to ensure that all content on the exam is consistent with the latest release of the software. They may also test on components included in these update releases if the components fall within already stated exam objectives, as they appear on the current version of the exam blueprint.
If significant new features exist in a release that are not covered by current objectives and these features are identified as being critical to a VCP’s job role, a new version of the exam blueprint would be released containing the new objectives and the exam would be updated to test on these objectives.
So, if you're preparing for your VCP4 exam it would be recommended to study from the latest 4.1 documentation, and download the latest exam blueprint.
With reference to the VCAP4-DCA, the lab environment is currently based on vSphere 4.0. Periodically, VMware would update the lab environment, and when they do they would revise the exam blueprint and potentially the exam, depending as with the VCP on whether there are new objectives relevant to the VCAP4-DCA job role that would need to be tested on in the exam. Until that time, the VCAP4-DCA will remain using a lab environment based on vSphere 4.0.
Update - July 22nd
Jon Hall from VMware has created a thread on the VMware commmunity forum for the VCP, and also posted the latest exam blueprint document:
How new versions of vSphere affect the VCP exam
VCP on vSphere 4 Exam Blueprint Guide
Update - August 1st
Quote from Jon Hall at VMware:
"As we go forward and everyone is studying using 4.1 materials, we are likely to include 4.1 based questions when we need to revise or replace questions, as long as the topic is one already addressed on the blueprint. We still will not cover topics (like storage IOCTRL) that are not on the blueprint."