Absolutely not announced but I'm sure they made the go decision. Recent actions have made clear they are going forward to 30-50M homes, probably 2019-2022. This will require 100.000's of thousand of small cells and possibly over a million. They want the best network in America, probably unmatched in any other part of the world as well.
My conviction comes from my belief that the top people at Verizon are smart and knowledgeable. They've taken several actions that would be stupid if the big build wasn't decided. McAdam and team are the opposite of stupid.