Likely. B&N is absolutely horrible with release dates and most of the time makes them up. I went to Lynch's website, LJ and the wiki entry for the series and neither of them mentioned anything about the third book, so I'm going to take that more than B&N.
Woo!Bunny: I <3 you and I pretty much trust your taste in books implicitly at this point, so I'll give some of those a try (eventually).