Not sure where you’ve been, but Lockheed designates the 2016 update as the “F-16V”.
https://lockheedmartin.com/en-us/news/features/2016/meet-the-f-16v—the-most-technologically-advanced-4th-generation.html
Outside of the Lockheed marketing department, I never knew anyone who referred to them as Vipers anymore.