The third season of Sora no Otoshimono (Heaven's Lost Property) was revealed on the cover of (and television commercial for) the March issue of Monthly Shonen Ace magazine, and now Kadokawa's official website is streaming a video confirming the announcement.
Warning: Trailer May Spoil Portions of the Sora no Otoshimono Movie.
The second half also includes a commercial for the movie's BD.
Sora no Otoshimono is based on the manga by Suu Minazuki. FUNimation licensed the first two TV seasons and movie for home video release. The first hit shelves back in December, with the second season scheduled for March on DVD in North America.