AMD issued a statement in which they say that their Mantle technology has been pushed into January 2014 and that there is no firm launch date. AMD showed a public demo by Oxide at APU13, so the API appears to be working and ready for launch.

“After much consideration, the decision was made to delay the Mantle patch for Battlefield 4. AMD continues to support DICE on the public introduction of Mantle, and we are tremendously excited about the coming release for Battlefield 4! We are now targeting a January release and will have more information to share in the New Year.“ – AMD PR 

Here is a video of the Oxide Games presentation where they showed a live demo of AMD’s Mantle API. 

The first AMD Mantle game patch is still going to be for Battlefield 4, so it is likely that EA’s decision to halt BF4 development in favor of fixing bugs could be part of the reason for the delay. AMD announced in September that the Mantle BF4 patch would be out in December, so gamers have been waiting for this patch for many months.

AMD Mantle Delayed - BF4 Patch Re-Scheduled for Jan 2014