We've had the VCP for a long time now, we've just about got the VCDX too, but there's an enormous gap in the middle:
Nothing has been announced officially on this yet, but the "gap" is going to be filled by a "Master VCP" certification for those who complete 2 steps:
1. The current VCP
2. The Enterprise Admin exam which is currently step 2 of the VCDX
Quite how the exam will be run, and where you'll be able to take it, is yet to be determined, but expect the cost to be £250+VAT. The exam is part multiple-choice questions and part hands-on lab, and I'm actually taking it in 2 days time (I'm registered for the full VCDX) so hopefully I'll meet the requirements as soon as the "Master VCP" is fully launched.
The exam blueprint is available at:
The blueprint content is a great match to the Deploy Secure & Analyze (DSA) course, most of which is also covered in the Fast Track (FT) course: