It makes perfect sense that she was waiting for the holiday month. That way we have something new and fresh (even if we waited out for months) until she comes back next year (hopefully) along with a new album.
Lana's dad talked to fans in Argentina and told them that the movie will premiere pn Decemer 2-nd in LA and 4-th in NYC, he also said that Chuck in preparing a documentary about Lana with Footage from the Paradise tour!!