As many of you probably already know, the Blue and Gray Education Society has published a number of monographs over the past few years (did they stop doing this?...the latest is from early 2005).
I'm not a BGES member, nor have I read any of these so I can't comment on them individually, but many of the titles at least sound enticing and they appear to be written by a range of accomplished authors. Scroll down through the Monograph Authors section. It appears Warren Grabau is working on a book about the Union navy. Also, having read a number of articles this past year dealing with the area described below, I was intrigued by the last person on the list, Stephen G. Smith, and his dissertation research which "concentrates on the South Branch Valley of the Potomac during the Civil War".