Gaga finishes her Cheek to Cheek tour with Tony Bennett on August 1st. After that she'll be free. I guess she'll have to shoot while on tour in July which makes me believe it'll start shooting late July, but Ryan is usually good at scheduling in people so they can be on his shows, and then come August she'll be fully dedicated to the project.
No shade. She was about to walk off on the interviewer as soon as he mentioned her coming back for another season, it's already been revealed she isn't returning, so their is no use in her answering that question, and defending whether or not shes returning.