1. The Knoxville Campaign: Burnside and Longstreet in East Tennessee by Earl J. Hess (Univ of Tenn Pr, 2012).
It's safe to say that we can scratch Knoxville off the list of campaigns and battles lacking a good modern treatment. This one has all the appearances (deep research, tactical and operational detail, and lots of maps) of yet another winner by Hess.
2. The Untried Life: The Twenty-Ninth Ohio Volunteer Infantry in the Civil War by James T. Fritsch (Ohio UP/Swallow Pr, 2012).
A 500-page oversize volume making heavy use of diary sources, this regimental history covers in great detail the Civil War history of the 29th Ohio, from its time in the eastern (the Valley, Cedar Mountain, 2nd Bull Run, Chancellorsville, and Gettysburg) and western (Chattanooga, Dug Gap, Atlanta, March to the Sea, and Carolinas) theaters.