+1, I am pretty sure APPLE would love to update their MBPs ASAP but sometimes engineering obstacles do exist in ANY company.
at least they will still release their MBPs before starcraft II(talk about vaporware) comes out.
I think Apple wants the CPU from Arrandale but without the lousy Intel integrated graphics. That would mean essentially a new chip. Intel has done this before for Apple with the MB Air. Apple may be waiting until this customized iX chip is available in quantity.
The current Core 2 Duo laptops are still very good but 10 months into their life cycle they are very much overpriced.
Core 2 Duo has been very good to Apple