Bandai announced that a new Tamagotchi model based on the Detective Conan (or Case Closed outside of Japan) manga anime series will appear.
More information about the Detective Conan or Case Closed Tamagotchi will appear at a later date.
The Detective Conan (or Case Closed) anime is streaming on Crunchyroll, and Viz Media handles the localization and release of the manga.
Given how the Detective Conan manga and anime series features many murder mystery cases, it is unclear if the new Tamagotchi will feature this aspect of the series in any form.