http://www.anandtech.com/tradeshows/showdoc.aspx?i=3002

Speaking of AMD, we were originally hoping as many others that Computex 2007 would have been the launch event for Barcelona and Agena. Unfortunately, this will not occur and the best we can hope for at this time is a Barcelona release in the latter part of Q3 at best and Agena following up in late Q4 or possibly sliding to Q1 2008 based on recently received information.
In fact, although we have seen DVT level chips running up to 2.3GHz, we understand there might be another silicon spin (maybe more) of Barcelona that is due later this month. If this occurs, then current rumors swirling around the trade show floor about the mass availablity of product not occuring until the fourth quarter might just be true. At this time the motherboard/chipset companies are in the process of locking down their designs and optimization of the BIOS for performance is just starting. Our early first looks at application benchmarks show a great deal promise for this processor series but nothing overwhelming or very exciting at this point in the game. We, as others, are hoping for some serious competition from AMD as this is good for the market whether you are an Intel or AMD fan. Let's just hope the Barcelona/Agena series performance comes up to speed quickly (along with supply) or AMD is going to be in real trouble heading into the critical Q3/Q4 buying season.