EDIT: "Sora no Otoshimono Movie" will be this year (2011) early Summer on a nationwide roadshow.
Oricon announces the following:
The 3 animated films are "Sora no Otoshimono The Movie" in early Summer (2011) (Director: Yanagisawa Tetsuya), "Strike Witches The Movie" (Director: Takamura Kazuhiro, 2012), and "Momo e no Tegami" (Director: Okiura Hiroyuki, 2012)
Even if a certain apocalypse is expected to befall on mankind, fans will at least know where they will be when it happens...
Update: Kadokawa Pictures has updated their listings to include all 3 films. *Subject to change*