I just hope the corresponding PPC motherboards are just as completive to the X86 motherboards. 
Well, if IBM release a chipset as well then there's hope.  Otherwise this processor will most likely power iMACs in 2003/4. Let's hope companies like MAI are interested in developing chipsets and motherboards for this cpu.
I wonder, IF next release PPC is really completive, why not Big Blue abandon X86-32 PCs for PPC PCs? 
Highly unlikely for IBM to abandon the Wintel platform for PPC PC's unless M$ release PPC versions of their Operarting Systems like the old NT 3.51 days.