Im gussing there has gotta be something there for them to even concider contiuing the PPC line ..
My guess would be for their PPC workstations that go with their Power based servers. That was the main reason behind the 970, to keep their line of workstations fast enough to keep their endusers happy. Which they were not with the 60x PPC workstations.
Now IBM realizes one basic thing, the economics of producing 970 series just for their own workstations is not going to be subsidized by large Apple purchases.
Dammy