I looked at the retail box my 950 Pro 512GB came in.
On the sticker that includes the serial number it had this:
Model Code: V5P512BW
So, there is only one version of the drive.
Thanks for the responses!
I did finally get a reply from Samsung support:
"Reference Number: xxxxxxxxxxxx
We have reviewed the case with careful analysis and confirmed that both SSD model: MZ-V5P512BW and MZ-VKV512 are the same. The one is referring to the Model name and the other one is the actual model code, Therefore, both of them are the same.
[Samsung Customer Care ]"