Indeed - I specifically remember owning a PowerBook 520 which was a 68K Machine with the PowerBook name. It was called a PowerBook as thats what it was, a powerful notebook. - Id love them to bring it back, its much better than MacBook Pro, which is dull...
Not gonna happen. Power for most brings back memories of the PowerPC days, long over. Plus, Steve said at the MBP intro that they are done with 'power' and want Mac in all of their product names.