Documentary filmmaker Ken Burns's latest project, Prohibition, is set to debut on the iPhone and iPad on September 23 via the PBS iOS app. The first episode will debut on iOS devices, but the three-part series won't be shown on the PBS TV channel or streamed on its site until October 2-4.
According to GigaOM, PBS is debuting Prohibition in advance on iOS devices to build early buzz for the documentary. HBO's Boardwalk Empire returns on September 25, and as a highly-
