*nods* I bet some can be done by tweaking ones own settings and to chimp a little less. (As you get used to a camera, you will find smarter ways to accomplish things and that should also lead to increased battery life.) I also believe that a few tweaks of the firmware can increase the battery life to some degree, and deal with a few other issues yet to be discovered - bad coding can waste CPU cycles and wreck even the best intentions.I have had some minor doubts about the battery life, and the feedback I got earlier on was of the diplomatic kind from a journalist. It still looks as though the batteries won't last just as long as they did on the 7D Mark I.
For some reason the battery life of mine has steadily improved. Not sure why. I was trying to kill the battery yesterday using GPS and a lot of live view and it seemed fine to me. Can't say how it compares to the 7D. He was complaining about only being able to shoot 1000 Raw + JPG with a single battery. He must shoot a pro body because I don't think that's unreasonable for one of those LP-E6's.
A tad shorter battery life could be a benefit to both Canon and users; Canon will sell more batteries, and users are more likely to buy that backup battery they otherwise wouldn't consider. Most of the time they won't need to change to that spare, but it won't hurt to carry it with you, and it would ensure you could go on for just a while longer if push comes to shove.
I shoot with a 5D3 and get like 1200-1400 pics, with basically very little screen usage during a wedding. I don´t have lenses with IS that might require extra energy. But 669/0,75=892 which seems lame.