To complete the set of advanced-level certifications for vSphere 4, VMware also announced the VCDX4 certification, designed to follow-on from the VCP4 and both new VCAP certifications. The VCDX for VI3 is held by roughly 50 individuals worldwide, most of whom work for VMware or their partners, and VCDX4 is aimed at the same calibre of individuals.
There are four elements to the VCDX4, three exams need to be passed as well as the individual submitting, presenting, and defending a vSphere 4 design to a panel of the current breed of VCDX holders:
The VCAP-DCA and VCAP-DCD exams can be taken either way round, but both must be completed before the process of submitting a vSphere design can begin. Those who pass the VCAP-DCA and VCAP-DCD exams will also gain those certifications en route to achieving their VCDX4.
The only compulsory vSphere training element of the VCDX4 is to achieve the foundation-level VCP4, but VMware recommend advanced-level vSphere courses as part of the preparation for the VCAP exams. An individual wishing to achieve VCDX4 who already has the VCP4 certification should follow this path:
VMware are offering discounts and shortcut paths to those who were persuing the VCDX3 certification, and have completed some or all of that program. The official VMware page on VCDX4 illustrates the various options available.