Per the VMware announcement today you can no longer sign up for the VCAP exams in the Cloud or Desktop tracks. No more CIA, CID, DTA or DTD exams.
Anyone wanting to advance beyond VCP5-DT or VCP-Cloud will need to wait until the VCIX exams are launched, and then pass both the design and admin exams for their chosen track (not to mention, pay $800 total) to achieve the VCIX certification for that track.
If you are already signed up to take one of these exams before March 14, no worries (assuming you pass) as you will still be able to take the exam.
If you’re scheduled after 3/14 you can either reschedule it to before 3/14 or get a refund.
(Edit: Updated existing registration info)