AMD does not plan to keep the AM4 controller in their 600 chipset series; they have physically excluded the controller from the chipset and only get offered DDR5 support. The mid to high-range 600 series will only provide DDR5 support to the users, as reported by most sources. However, the X670 and X670E motherboards are still not officially unveiled, but AMD’s new socket won’t be featuring support for DDR4 anymore. Most people would prefer DDR4 support to be included as it may save a lot of costs, as  DDR5’s memory price costs twice as much as DDR4.