Bushiroad (Cardfight!! Vanguard) has announced that they are working on a fil based on the franchise of Tantei Opera Milky Holmes, which will be called Tantei Opera Milky Holmes the Movie: Milky Holmes’ Counterattack and it will come in february.
Anime News Network describes the story as follows:
The film will feature a three-way battle between The Gentlemen Thief Empire, the Genius 4, and the Milky Holmes groups. Just as the Milky Holmes group is settling down to relax at a hot spring after their study tour, an alarm goes off, because The Gentlemen Thief Empire intend to steal a treasure. The two groups start to battle for who gets to use the “Toys,” when suddenly the Genius 4 rush to the scene.
The series has inspired 4 anime series and 3 anime specials.