Production of Infinite Stratos Season 3 may begin after the release of volume 13 of the LN. Season 3 could be the final season of the anime series as Writer Izuru Yumizuru
Infinite Stratos Season 3, News, Updates, and Release Dates - YouTube
How Could Infinite Stratos Be Improved? | Anime Amino
IS: Infinite Stratos (Infinite Stratos) - MyAnimeList.net