Fox has announced the 4th season of So You Think You Can Dance will premier on May 22nd. From the press release:
SO YOU THINK YOU CAN DANCE, the high-stepping sensation from the producers of AMERICAN IDOL, again promises to keep viewers moving to a different beat, as dancers skilled in styles ranging from street to ballroom compete to be named America's favorite. Hosted by Cat Deeley, Season Four of SO YOU THINK YOU CAN DANCE kicks off with a two-night, four-hour premiere Thursday, May 22 (8:00-10:00 PM ET/PT) and Wednesday, May 28 (8:00-10:00 PM ET/PT) on FOX.
Once the DANCE auditions conclude, weekly performance shows will air on Wednesdays (8:00-10:00 PM ET/PT), and weekly results shows will air on Thursdays (9:00-10:00 PM ET/PT).