The PC version of Infinite Stratos: Archetype Breaker should be coming out soon published by DMM Games. According to the official Twitter Page, the game is scheduled to be released this November and the month is already nearing its end. Reaching over half a million Pre-Registrations, there seems to be a large number of users interested in this game. Perhaps I'll give also give it a try since I did watch the Anime for a little bit.
Game Site: Link