Hi David,
The new generation of Intel chip is Core 2 Duo... It is more effective and less power consuming (well, as Intel advertised). According to my personal observation, new cool stuffs has often been released from Apple store sort after they doing some sort of Conference, Presentation...and the next conference in this year will be in August. So, if you have time, you could wait for a while and see, what they will have to increase their volume and revenue. And of couse, make us happier than ever.
Cheers,
James