Battery life dropped for the 15". 8-9 hours down to 7.
Wait, is it maybe due to them using the new battery test they used on the Air?
Apple is using a new, more rigorous battery test that measures the results you can expect in the real world like surfing your favorite sites in a coffee shop or catching up on the latest web videos. Even using this new test, MacBook Pro delivers amazing battery life. For your real life.
The battery life hasn't decreased, they're just stating more realistic hours now.
Overall I'm not at all disappointed that I didn't wait and got my 2010 i7. The absolute only thing that I would personally find useful on the new ones is Thunderbolt, but that's about it...
I think so. The features page says this: