Well, there's a first - a VCP certification title for a minor version - and it just happens to be the latest VCP for vSphere itself, the VCP6.5-DCV!
You can read about the certification and exams using these links:
vSphere 6.5 Foundations exam
VCP6.5-DCV delta exam
We also see a return of PDF-based versions of the exam objectives - formerly known as the "exam blueprint", but now simply called the "exam guide". You can access the 3 guides using the exam page links above.
One thing to note about the Delta exam - it's only for current (not expired) VCP6-DCV holders - NOT VCP5-DCV holders - so essentially it's been created to give the simplest recertification option for active VCP6-DCV holders.
If you already hold a VCP certification, there are various paths available that involve the 3 new exams - check this page to find the right path for you. If you don't find the path that applies to you, click on "New Candidate Requirements" on that page.
Here's the official announcement on the VMware Education & Certification blog.