Hmm delayed a month. We can be pretty sure its not yeild or anything major, if it were we would have heard of it before.

It is most likely delayed because of the 580...... amd didnt see that one coming. So my personal feeling is atm cayman and 580 are really close with possibly cayman being a tad slower, amd want fastest single gpu title back so maybe they will up the clocks a bit, go at the drivers hard and deliver the fastest single gpu card a month from now.