YOU MUST READ THIS POST!!
Just sick!
So, I have done a couple things in the past two days. I updated to 108.3 (or whatever the latest was) and the new SMC controller for the rMBP 15"..
I ALSO did a PRAM and SMC reset. I probably should have done these two large things seperately, maybe do the PRAM/SMC resets and tested, and then done the 10.8.3 and SMC FW update and then tested.
But, regardless. Since yesterday when I did this I have now been getting just EXTRAORDINARY battery life. I have done now about 4.5 hours (which is a typical TOTAL day) and my battery life still shows 65% remaining and about 4-5 hours remaining. Now, I don't think I will GET that much, but I am sure I am going to get 6-8 hours today, which would be JUST SICK! Best battery life of any laptop I have used.
I have not seen any performance degradation, so I don't know what is going on to enable this, reduction in CPU or GPU switching? I'd really like to know, how would I test that?