AMD has reportedly made a change to their desktop CPU launch schedule, resulting in the Phenom quad-core units receiving a small setback. The fastest 2.6GHz part may not be released along with the others, and instead a 9850 model running at 2.5GHz could be the highest-clock unit available. This could have something to do with the addition of triple-core CPUs to launch. The higher-clocked units are scheduled for a release in 3Q 2008, while all other Phenoms should launch on time as planned.
Shipping delays hurt AMD, and the Phenom is coming awful late already, although this in particular is just a minor misstep. As a side note, the Athlon 64 X2 is soon to be phased out and AMD will no longer take orders for certain models by the end of the month.