It was announced at the Kantai Collection 2nd Naval Review event in Yokohama that an anime movie of Kantai Collection: KanColle will be released in 2016. A promotional video screened only at the event featured several characters appearing for the first time and in Kai Ni form for the upcoming movie.
The list of characters who will be featured in the upcoming movie includes:
Kantai Collection: KanColle is an online, browser card-based, military simulation game. The cards are naval vessels from World War II with historical attributes. They are anthropomorphized as cute girls named "KanMusu" (Warship Girl). The game was adapted into a TV anime in Winter 2015, which ended with 12 episodes. The second season was announced during the TV anime's finale.
An official tweet specified that the sequel and anime movie are two different projects but are in production at the same time.