PubIt was launched in late 2010 in response to Amazon's Kindle Direct Publishing, but it's never been clear just how much success the platform has had. B&N has declined to share any solid info on the number of titles or authors that used PubIt, not even when Nook Press was launching. At that time B&N only shared vague details about PubIt's growth, leading many (including this blogger) to wonder exactly what B&N didn't want us to know.
It's been nearly 3 months since B&N announced Nook Press, and while I don't know that there are any authors who like the service or prefer it to PubIt I can tell you that B&N has updated Nook Press several times. One update that stands out was announced in early May and added the ability to edit previously published ebooks. No, I can't believe that was forgotten at the launch of Nook Press, either.
It's a good thing that B&N has been releasing updates to Nook Press, because the early user reports variously described it as simply nonfunctional, useless, a joke, and such a terrible experience that one author gave up and went back to using Smashwords. I also know of several authors, including the one who tipped me to this story, that have not seen a compelling reason to try Nook Press.
If you have tried Nook Press and prefer it to PubIt (or vice versa), please leave a comment with your experiences.