Could it really be true that Kampfer maybe getting a new season or even new entry to it's name? Even though it isn't 100% clear yet, one thing is for sure: Its on its way. Quoted from ANN:

'The wraparound jacket band on the fifth volume of Yû Tachibana and Toshihiko Tsukiji's Kämpfer manga has announced that a new anime will air on the Japanese television station TBS in March of 2011. The jacket band's text does not specify if the new anime is a series or not. 

A "new Kämpfer project launch" had been announced at the TBS Anime Festa event in Tokyo in August. The official blog and Twitter account of the editorial staff at Media Factory's Monthly Comic Alive magazine had then revealed that details of the new project would be announced in the fifth manga volume. The booth of the companies involved in the project will present a promotional video at the Winter Comic Market event (December 29-31) at the Tokyo Big Sight event complex"

 

Update: More background information added.

Source: AnimeNewsNetwork (ANN)