Some photos of a solo Matt from the Mexico City photocall and premiere are below, with more at PopSugar and Cionoticias.
A brief video clip of Matt responding to a question in Spanish at the premiere is here.
In an interview here Matt said Lucy was not pregnant, but they may have another child in about a year.
In other interviews Matt talked about coming to Mexico during the summer when he was 16 years old for language school in Cuernavaca: "they were trips that marked me deeply because they represented my first experience with another culture." Matt also discussed his admiration for directors Alfonso Cuarón and Guillermo del Toro.