It was announced at the two-day concert Live Milky Holmes Full Color Matsuri (key visual pictured) this past weekend that a new anime of the Tantei Opera Milky Holmes franchise will air on December 31, 2016.

At the same time, the Milky Holmes seiyuu quartet of Suzuko Mimori, Sora Tokui, Mikoi Sasaki, and Izumi Kitta will hold a fan club countdown event on New Year's Eve. A new music CD to commemorate the event is also scheduled for release.

Footage from Live Milky Holmes Full Color Matsuri and interviews with the series cast members will air on the CS-TBS network in July. The first anime series, Tantei Opera Milky Holmes, will also be rebroadcast on TBS Channel 2 in Summer 2016.

Source: Official site

Tantei Opera Milky Holmes: Fun Fun Party Night♪ - Ken to Janet no Okurimono on MAL