Rumors are that new unibody MacBook Pros are coming in January.  Yes, unibody, aluminum, and with one most likely controversial “feature.”  Much like the MacBook Air, it will have a non-user-replaceable battery.How is that going to work?  A 17″ laptop, particularly a MacBook Pro, a higher-powered laptop than the MBA, will suck a lot more power than the MBA.  Besides the fact that the battery will eventually degrade over time, it’s always   Enter the theory: Silver / Zinc batteries.ZPower