AMD revealed Mantle to the world at its Hawaii launch event and at the time it promised support for the new API would come to Battlefield 4 sometime in December. In December, AMD said the API would show up in January.
Now though, it appears that the delay may be somewhat longer. Late yesterday Extremetech reported BF4 support would finally land in February. AMD's Robert Hallock denied the patch is coming in February, but he didn't say it is coming in January, either. If it is, it's coming by Thursday. If it is not, that's very bad news for AMD given the scale of its PR onslaught.
Back at CES the company talked up Mantle in an elaborate demonstration, featuring Oxide Games and DICE products. AMD claimed Mantle would deliver a significant performance boost over DirectX, up to 45 percent in certain scenarios. Since Mantle is not available yet, it is impossible to put these very optimistic claims to the test.
Mantle won't be a game changer, but if it is embraced by major developers, it could give AMD a competitive edge both in discrete and integrated graphics. Intel has been making headway in the graphics department and it is closing the gap with AMD APUs with its latest Iris series GPUs.
Mantle could be AMD's trump card, a cheap way of making its APUs more competitive without wasting silicon, but for this to happen Mantle needs to be embraced by developers. It is very promising, but at this point there are quite a few "ifs" associated with Mantle.