Figured this might help some of you out there in making buying decisions. Here's a comparison of the battery capacity of the (old) 2015 version to the newly released pros. The new 13" retina has a 46-watt-hour battery with touch bar version, 56whr without touch bar By comparison, the 2015 (old) 13" retina had a 74.9-watt-hour battery. The new 15" retina has a 76whr battery The old 15" used to have a 99.5whr battery I'm aware that the new skylake platform should in theory be a little easier on battery life, but then again the new touch bar and newer/brighter screen might use a tiny bit more. It will be interesting to see what real world battery life is, but they had to shave off weight somehow, battery is the easiest part to do so. I think this is why battery life got no mention in the announcement today, I suspect it'll be the same if not a little less with real world use.