The dual 64-bit core PowerPC970MP™ (970MP) is the next evolutionary step in the PowerPC 970 family of microprocessors. The higher frequency grade versions of the 970MP consume higher amounts of power than earlier IBM microprocessors do, and that can cause temperature issues. Each 970MP processor core contains a thermal diode used to monitor its operating temperature. The thermal diode must be monitored to ensure that the maximum operating temperature of the 970MP is not exceeded.
So my friends, no more conjecture. Not only is the 970MP real, it's officially real. ;) Bring on the new Power Macs!
The IBM document has now been pulled. It seems everything is getting pulled right after release these days...