1. Roughshod Through Dixie: Grierson's Raid 1863 by Mark Lardas (Osprey Publishing, 2010).
I believe this will be the first Civil War book in Osprey's Raid series [ed. actually there is one about the Andrews Raid].
2. Edmund J. Davis of Texas: Civil War General, Republican Leader, Reconstruction Governor by Carl H. Moneyhon (TCU Press, 2010).
2nd entry in TCU's Texas Biography Series. Anyone interested in prominent southern unionists will want to read this one. They also have a "Rip" Ford volume in the works.
3. The Maps of Gettysburg: An Atlas of the Gettysburg Campaign, June 3 - July 13, 1863, Revised Full Color Edition by Bradley M. Gottfried (Savas Beatie, 2010).
For this new publication, the maps are reproduced in color and the first ed. errata corrected and incorporated into the text.