I vaguely recall the fact that the lighting equipment that was in the theatre was fairly old school. Cirque du Soleil will undoubtedly want to completely replace the lighting and sound equipment to more modern versions that are more energy efficient. Stage technology has changed drastically from when La Nouba was first created at the end of the last century.
Broadway has embraced the use of video and projection technology. Given that the source material for the new show is Disney animation, I firmly believe that Cirque du Soleil will want to use video and projection in the new show. If that's true, the theatre will need to be refitted with new technology.
All of that will take time. My guess is that the first inkling of what's to come will be in the form of audition notices.