Ally told me there were some new books announced for Tamora Pierce, and then
jenn2d2 mentioned an NPR interview that included Tamora Pierce today (listening to that as I type), so... I went a-hunting. Long waits, but very very cool.
2006 * TERRIER, book one of The Provost's Dog trilogy, three books which detail the adventures of Rebakah (Rebba) Cooper, a street girl raised to be a manhunter by Tortall's Lord Provost, set 200 years before ALANNA: THE FIRST ADVENTURE, in Random House hardcover in the U.S. and Canada--October
2007 * BLOODHOUND, book two of The Provost's Dog trilogy, detailing the further adventures of Rebba Cooper, nicknamed "the Provost's Dog", as she rises through the ranks of the Lord Provost's command, in Random House hardcover in the U.S. and Canada--September
2008 * ELKHOUND, book three of The Provost's Dog trilogy, the ultimate task set for Rebba Cooper, nicknamed "the Provost's Dog", in Random House hardcover in the U.S. and Canada--September
2009 * NUMAIR: THE EARLY YEARS (very tentative title), in which we learn of Numair's last years at the university of Carthak, the beginning of his conflict with the newly-made Emperor Ozorne (Numair's best friend), his quick departure from Carthak, and how he survives afterward, in Random House hardcover in the U.S. and Canada--September
2010 * untitled Tortall universe book, about the coming-of-age of Maura of Dunlath, and how she finds her own unique place in the realm, in Random House hardcover in the U.S. and Canada--May