A couple people have pointed out to me that i missed the fact that the Nook iOS app was updated. Well, I've been checking my iPad every few minutes all day. There is no Nook update for it. Rather than continue to wait, I searched for "nook" and the screen shot at right shows what I found. Do you see the big hole where the Nook iPad app isn't?
If I had to guess then I would bet the app is missing due to technical problems. Or it might be like the Google Books app; maybe it's not done yet.
This day is getting strange.
P.S. And yes, the iPhone app is missing the link to the ebookstore.