User blog comment:Awyman13/BF4 Confirmed & Speculated Weapons/@comment-5263920-20130730153807/@comment-11823521-20130731093228

"The AK-12 is clearly seen in the list of weapons in the picture above; in fact, it's the first one in the list. By 2020, most or all existing AK-74Ms would be replaced by the AK-12."

Agreed.

AK-12 (or AK-200) is currently in test in Russia. The main change between the AK-74 and the AK-12 is the addition of picatinny rails and a telescopic buttstock. But basically it's an AK-74 (same cartridge, same receiver, same rpm, etc).

I think that we can assert that it is going to replace AK-74 in BF4.