In January Intel has a big embarrassment and had to recall motherboards with it's new P67 chipset, pretty much putting the brakes in the new Sandy Bridge CPU launch. They estimated it might be until April before the fixed P67 boards would be widely available (though it turned out to be a little earlier).
April was also the time we thought AMD would be launching the Bulldozer desktop processors. It looked like a golden opportunity for AMD. To launch it's new architecture on the heals of an Intel fiasco.
Intel fixed their chipset and got the replacements out quicker than expected and then April came and went without a new AMD processor. AMD stayed quiet until June when they launched the new AM3+ socket boards, which you'll need for a Bulldozer CPU. But no new AMD CPU for those boards yet, they said it would be August or September.
Well August is gone and we are a week into September. And there are rumblings that it's looking more like October now.


