AMD is planning to introduce its Hawaii GPU at the end of September according to a report on BSN. A press event is set to take place on September 23rd in Hawaii and the public launch is expected on September 25th. It's unknown when the card will hit retail shelves though.
BSN: We just got confirmation that AMD will be launching their latest GPU codenamed Hawaii. The event will be scheduled during the week of September 23rd, and there will be a live streamed public event on the 25th that will introduce AMD's new flagship GPU to the world. Some details will be saved for a later date, however, AMD is planning to make an event out of this with some interesting details that include aircraft carriers and some more sneak previews of Battlefield 4.
Yes, let's remember that Battlefield 4 is coming out soon and it looks like AMD's new Hawaii GPU is probably going to be the GPU that it will bundle with. The timing is great for AMD since they'll likely officially launch the GPU and start selling them sometime in early October.