Following in Fabio's footsteps, Kirill Petrenko has pulled out of Fidelio, which opens next week. No, he hasn't had a better offer - he's suffering from back problems. Didn't he cancel some Rosenkavalier dates last time he was here? I can't remember.
Can't complain about his replacement, Mark Elder; David Syrus covers the final two dates.
*UPDATE* - the Press Release has more details.