They're going to offer it for books that have met certain sales metrics : http://www.digitalbookworld.com/2016/barnes-noble-launches-nook-press-self-publishing-platform/
Interesting. And a 1000 e-books really isn't that high of a threshold... unless they mean just through B&N online.
I wonder if they're looking at print runs or POD. Committing to a print run, even a small one, is a big step...
They're talking about actual shelf space, so not POD. That's pretty cool. Devil is always in the details.