NOWHERE in 2257 does it say a word about model releases. The only things required are identification documents, model's former name(s) and stage name(s) if the producer is reasonably aware of them, and production date of the shoot.

I always thought that the term model realeases and 2257 docs are synonyms.

If 2257 docs cover model's identification documents (passport or driver's licence), model's former name, stage name(s), production date of the shoot, then what is "model releases"?