User blog comment:RoyallyBella/Mystery of the Abyss expectations blog/@comment-25400433-20141004212916/@comment-4954276-20141004220157

On sites talking about Winx Club Wow: World of Winx, like here, it says: "The most recent Winx Club movie, The Mystery of the Abyss, will be available only on Netflix in the U.S., Canada, UK, Ireland and France shortly after its theatrical release earlier this month (it was written on september 25)." So it should be out sometime this month or in November.