Come on, guys. The battery is smaller dimensionally and capacity-wise because of other optimisations that meant Apple could make a laptop this thin and light while maintaining everything else.
7 hours new battery life on my 15" MBP 2011 advertised when it came out. It delivered. 2.5kg behemoth. If my 1.3kg far more portable new 2016 MBP can give me 7 hours, instead of the advertised 10, do I call about something wrong or do I be happy that:
1. My processor runs 20 degrees cooler
2. The machine feels swankier
3. The IO is speedier than Safari can ever be snappy
4. I get USB-C which brings far better transfer speeds coupled with APFS on my external hard drive
5. New speakers are very, very good
6. I get 6-7 hours of normal use with Safari, Outlook and OneNote open. Two of those apps are not particularly optimised for battery.
The new machine is a fantastic upgrade for those who are coming from some generations ago, like I am, from Late 2011. If you are on 2013-15 retinas, the only real deal is reduced size and weight for you. For the older generations, this machine is a hell of an upgrade.