Since early 2009, WTTW-HD/11.1 and WTTW-SD/11.2 have shared the same programing schedule until the launch of WTTW Prime on March 30,2009.
Since early 2009, WTTW-HD/11.1 and WTTW-SD/11.2 have shared the same programing schedule. WTTW announced on February 17,2009 that WTTW-SD/11.2 would become a new sub-channel called WTTW Prime on March 30,2009.