EW is also confirming that Tony Award winner Kristin Chenoweth will return for multiple episodes as April Rhoades. She has previously appeared twice on the series.
As previously reported, the show's February 6 episode will include a guest appearance by CBS News anchor Katie Couric, and a performance of Michael Jackson's "Thriller."
Glee stars Matthew Morrison, Lea Michele, Cory Monteith, Jane Lynch, Chris Colfer, Amber Riley, Jayma Mays, Naya Rivera, Chord Overstreet, Kevin McHale, Heather Morris, Jenna Ushkowitz, Dianna Agron, Darren Criss, Harry Shum, Jr, Jessalyn Gilsig, Mike O'Malley, and Mark Salling. Recurring guest stars have included John Stamos, Cheyenne Jackson, and Charice.