"Mia's outspoken approach combined with Adam's passion will definitely add a fresh new chemistry to the panel," Lythgoe, who's also the show's executive producer/co-creator, said Monday.
The new season, which kicks off Thursday, May 27 at 8/7c on Fox, will add new twists to the show's formula. This time around, there will be 10 finalists competing and only one dancer eliminated per week. The contestants will also be partnered each week with former SYTYCD finalists.
Mary Murphy, who was a permanent judge through Season 6, will appear as a judge during auditions and serve as guest judge thereafter.
Michaels has won two Emmys for her choreography for "Calling You" and "Mercy" on SYTYCD. Her credits include Cirque du Soleil's Delirium, West Side Story, Hello, Dolly! and Celine Dion's A New Day.