The VCDX-Desktop Design Defense Blueprint and the VCDX-Desktop Application & Handbook will be available for download on February 10, 2014. VCDX-Desktop applications from current VCDX-holders who have achieved the prerequisite VCAP certifications will be accepted any time after February 10th.
Qualified net-new VCDX candidates may submit VCDX-Desktop applications for the July VCDX Design Defense review cycle.
2014 VCDX Design Defense details and application due date information can be found here:
https://communities.vmware.com/thread/464699
Any VCDX-Desktop related questions can be answered in this forum or directed to mbrunstad@vmware.com