Concern Kalashnikov (Izhmash) has updated the AK-104. The most obvious changes include the handguard rails and the AR15 collapsing stock adapted to an AK-100 series folding mechanism. The dust cover is mounted, not to the rear sight, but just under the sight. This adapts the rifle to have a Picatinny rail and hinged receiver cover without changing the rear sight.
What I find interesting is the unique safety selector on the left-side of the grip.
I will update with more information as it comes in.