"Toms just got it wrong...
If you read a little more closely, you'll see that AMD says it's shipping Tbred processors by the end of March; that doesn't mean they'll be selling in retail channels for us to grab. And there's also no guarantee that AMD is saying that they will ship desktop Tbreds by the end of this month, they could be talking about mobile Tbreds shipping at the end of this month (which is more likely IMO)."
From Anand:
According to AMD's press-release just put out today, the first 0.13-micron Thoroughbred CPUs will be shipping to OEMs by the end of this month. It'll be another few weeks after that before end users can get their hands on the first 2200+ CPUs but those will be a much better buy to look for than this 2100+, the reason being that they'll have a bit more overclocking headroom and will run cooler.
So, I now see your point on the Tbreds being available a few weeks after they ship. However, the press release for the .13micron processors states, "AMD (NYSE:AMD - news) today announced that it plans to begin shipping AMD Athlon(TM) XP processors codenamed ``Thoroughbred'' based on .13 micron technology to customers later this month." The mobile parts are NOT labeled as XP's, they are Athlon 4's. So they are most likely talking about desktop tbreds.