Original sentence: Book 2 - Shadowplay (Hardcover, 2007, Trade Paperback 2008).Book 3 - Shadowrise (working title, originally Shadowfall; Hardcover, forthcoming (late 2009/early 2010)
Edited sentence: Book 2 - Shadowplay (Hardcover, 2007, Trade Paperback 2008, Mass-Market Paperback 2009).Book 3 - Shadowrise (Hardcover, forthcoming in early 2010).Book 3 got so long that it was not possible to be published in one volume.Book 4 - Untitled (Hardcover, forthcoming in mid-2010).There will be a fourth book to conclude the Shadowmarch series.They are both expected to be published in 2010 only a couple of months apart, but no firm pub dates have been set (as of August 2009).Titles for books 3 and 4 have not been finialized