The Firearm Blog has photos from Konstantin Lazarev's Facebook that shows AK-12 running in the field. There are some technical observations in TFB's post that seem to indicate certain level of advancement from AK-74
http://www.thefirearmblog.com/blog/2014/11/03/ak-12-all-dressed-up-for-the-dance/
From: The Firearm Blog