I periodically check Savas Beatie's Under Contract page to see what's in the pipeline. New Civil Warrior Sean beat me to it, but it deserves repeating that Edward Cunningham's dissertation The Shiloh Campaign, 1862 will finally be published (with some kind of assistance by Timothy Smith and Gary Joiner). I am really looking forward to this one. I first heard about Cunningham's monograph back in May when David Woodbury directed me to the transcripts from his Civil War Forum author interviews.
[if you're interested, this is how you can get them per Dave: for now you can find them as if they were messages. Click on "advanced search (below the "Find Messages" box. Then, search for keyword "Transcript," and set the date field back to "beginning of time." That should bring up 30 or so text files, all entitled "A Conversation with xxxxx."]
The interview with ranger Stacy Allen praised Cunningham highly, particularly for his treatment of the battle's first day. He also mentions "The Battle of Shiloh and the Organizations Engaged," (out-of-print) by Maj. David W. Reed. According to Allen, Reed's book is the best tactical treatment of the battle. Maybe we can get a new edition of Reed someday as well.