The Anime Network has secured the rights to stream IS: Infinite Stratos
through their online player. Episodes 1-3 will be released on Sunday, January 23rd at 8:30 PM (CST); all remaining episodes will also air on Sundays at the same time. The simulcast will be free-to-watch for all registered users, and also lists the season as being 12 episodes long.
Source: The Anime Network
Story by LightningRamiel