Grey has been out of the show since mid-June. He is on an extended leave of absence. Sean McCourt has been playing the role since Grey's departure.

July 20 will also mark the debut of two new Wicked cast members, Jennifer Laura Thompson as Glinda and Joey McIntyre as Fiyero.

George Hearn won Tony Awards for his performances in La Cage aux Folles and Sunset Boulevard and was also nominated for his work in Watch on the Rhine, A Doll's Life and Putting It Together. Hearn's other Broadway credits include Meet Me in St. Louis; Ghetto; Ah, Wilderness!; Whodunnit; I Remember Mama; Sweeney Todd: An Almost Perfect Person; Hamlet; The Changing Room; 1776; and A Time for Singing.

With a score by Stephen Schwartz, a book by Winnie Holzman and direction by Joe Mantello, Wicked features choreography by Wayne Cilento and plays the Gershwin Theatre, 222 West 51st Street. Tickets are available by calling (212) 307-4100 or by visiting www.ticketmaster.com.