Appears a Colt LE901 in 7.62x39 might be in the works.
http://www.thefirearmblog.com/blog/2013/06/18/colt-le901-7-62x39mm-accidentally-revealed/
http://www.thefirearmblog.com/blog/2013/06/18/colt-le901-7-62x39mm-accidentally-revealed/