There's apparently going to be a new Christine alternate named Kaley Ann Voorhees. She looks EXTREMELY young and from what i can gather this is her first show after college. This should be interesting! So i guess this means Mary Michael Patterson will become principle again.
I believe she was going to be a junior at Point Park this fall, so she is probably around 19-20. They've been casting a lot of young Christines recently - Julia Udine, who is Christine on the current tour graduated high school last year.