The Battlefield 4 AMD Mantle patch has now been delayed to some time in January 2014. A survey has been emailed to all active EA account holders, who have played or are still playing the game.
EA are saying emails have been sent to all account holders though there is no clarification whether only PlayStation 4 users got the emails.
EMAIL:
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.
BATTLEFIELD 4
Embrace unrivaled destruction in Battlefield 4. Revel in the glorious chaos of all-out war packed with rewarding, tactical challenges in an interactive environment. Demolish the buildings shielding your enemy and lead an assault from the back of a gun boat and much more.
You have the freedom to do more and be more, playing to your strengths and carving your own path to victory. There is no comparison. Immerse yourself in the glorious chaos of all-out war.
Official Release Date: November 1, 2013. You can find all the latest Battlefield 4 Updates and News here.