Your question is newest found. Seems Verizon doesn't really care about customers.
One reply in another thread thought that we shouldn't be worried about updates.
I disagree, just paid full price for Priv, I was shocked when I checked "About" and noticed that version was 5.1.1. Testing, Smesting, there is no legitimate excuse that Verizon hasn't released Marshmallow yet.
Nor is Verizon even giving us a reasonable answer.