Well, even though he's totally wrong, he's actually right.
TS is very bimodal on this - they're either dead-on, or way off, and they were off on a number of things at MWSF.
If TS is right on this, it will be so Apple has a chance to lower the baseline prices for Powermacs. That in itself may not be a bad thing, and you won't be paying $3k for that kit, but $2200.
But I don't buy it. Apple could have shipped 2.7GHz 970FX at MWSF if they wanted given the liquid cooling. We know the 970MP exists, we know a GX exists.
Apple waited a year to roll out new hardware for a reason. It's apparent that they're waiting for WWDC now. I won't speculate on what's going to ship, but I only see 2.7GHz if they've taken this time to seriously cut costs on the Powermac and a big price cut accompanies.
But I still think TS is wrong.