Addendum:

> > would it make more sense to go for a P5010 based system or
> > one based on the P5020?

> That would depend on the price difference between the two.

No prices on the P5 yet, but seeing the price difference the number of cores makes with the P4 going for the P5010 could be a sensible decision:

https://morph.zone/modules/newbb_plus/viewtopic.php?forum=11&topic_id=6196&start=160

With the P4 halving the amount of CPU cores cuts off chip price by 25%. Don't know if Freescale will apply this policy also to P5 though.