Just came across this article on chicagotribune.com:
'Top Chef' cooks up a move to Chicago
Bravo has ordered up another season of "Top Chef," and the upcoming fourth edition of the show will be filmed in Chicago.
"We love moving the show from place to place; it gives it a completely different feel," Bravo executive Frances Berwick said in an interview after announcing the news at the annual Television Critics Association press tour in Beverly Hills. "Chicago is a hotbed of great talent and it felt like the next logical step."
Season 4 of "Top Chef" will be filmed this year, but before the brutally cold weather hits, according to Berwick. “We have figured out how to not film it in the winter – that was a prerequisite,” Berwick said.
Casting will get underway this month, and Bravo will be looking for cooking mavens in Windy City and around the country. The current season, which includes Chicago contestant Dale Levitski, is set in Miami.