Last month, prolific voice actress Kana Hanazawa let slip that she'll be reprising the role of Charlotte Dunois in a new Infinite Stratos production while describing her recent work. Now, with Overlap relaunching the series with the release of the eighth light novel and re-release of the first two volumes, that new production has been confirmed.
The format and timing of the new anime have not been revealed.
From Overlap's promo campain with mention of the new anime:
Volumes 1-7 re-release