UPDATE: An email from Ernesto Palacio, manager to Elina Garanca, states, “Elina Garanca is waiting for a second baby. Would arrive on December. She would cancel Rosenkavalier at the Met, Carmen in London and MAYBE Werther at the Met.”   PREVIOUSLY: La Cieca hears a rumor, currently unconfirmed, that Elina Garanca is pregnant and will cancel her participation in the Met’s new production of Werther this season.