The third installment of the G. I. Joe Contamination Legacy was released a few moments ago. The title is G. I. Joe Contamination Legacy: Sightline.
For those who don't know, the Contamination Legacy was written by Wes Ferguson, Don Maue, and Bill Nedrow. The characters who appeared in the three books were chosen by the attendees of the Kindle Worlds Author Panel at JoeCon 2017. The books take place over three eras of the G. I. Joe mythos.