Will Balliett is leaving as editor-in-chief of Hyperion to become president and publisher of Thames & Hudson Inc., the U.S. subidiary of the U.K.-based illustrated book publisher. Balliett will join T&H next month, succeeding Peter Warner who will be retiring after 30 years as Thames & Hudson's president.

Before joining Hyperion in 2007, Balliett was the publisher of Carroll & Graf Publishers and Thunder's Mouth Press when both imprints were part of the Avalon Publishing Group. Balliett joined Avalon when his packaging firm, Balliett & Fitzgerald, was acquired by Avalon.