The first one will see the light in July 2009 in the UK and in January 2010 in North America. The second one, provisionally titled Dragon Keeper, volume 2, will be released simultaneously on both sides of the Atlantic in the spring of 2010.
More Hobb is all well and good, but I hate the wait in between volumes. In other news, the author's short story collection will likely be published later this year. It will feature works written under both Robin Hobb and Megan Lindholm.