http://www.detectiveconanworld.com/wiki/Movie_21

 Preview and Teaser information

Movie 20: The Darkest Nightmare

Movie 20 end credits teaser image.

The post-credits teaser at the end of the movie shows falling momiji leaves. Heiji Hattori's voice says: "So... You've been keeping that a secret, huh..." (しのぶれど・・・っちゅうわけか Shinobure do・・・tchi yuuwakeka^?).

Let's Talk with Gosho Aoyama-sensei Day 2016

• Next year's movie will be a love story of Shinichi and Ran. The Kansai members will appear, too.　　

　Postcards and Animal Crossing promotional hints

• 2017's Conan movie is planned to be a super love comedy (laugh).
• The protagonist of next year's movie is Kazuha ♥ (laugh)
• Heiji will show up in next year's movie!
• There are many appearances of Heiji in next year's movie (laugh).
• Next year's movie is planned to be Heiji and Kazuha's love comedy ♥
• 2016-09-25 The new movie's teaser is finished
• 2016-09-25 It's pink and red and lovey-lovey
• 2016-09-25 The title is "Ka◯◯◯◯◯ no ◯n◯"
• 2016-10-03 I can't believe you figured out the title...;
• 2016-10-03 Some said it was [Kazuha-chan' samba]...⇒
• 2016-10-03 ⇒There are a lot of possibilities ( ` 3 ´ )