Huh? (and, no, I'm not 60+)
Apple's keynote maybe... sheesh. Or how about Apple's website....
"
Longest battery life ever in an iPhone.
With the A10 Fusion chip, this year you’ll get more time between charges than ever before. Take advantage of up to two more hours on iPhone 7 and up to one more hour on iPhone 7 Plus than the previous generation."
Or, I could just go with having a slight bit of common sense and basic knowledge of physics.

(Or, I suppose I could fall back on my original degree in electronics engineering.)
Autonomous vehicles is a qualitative problem, not a quantitative one. We're not moving fast towards anything, besides some big problems.
Aside from the health risks, yes, I'd have to wait and hear them. The last BT headset I bought isn't really loud enough for some of the environments I'd have to commonly use it.
But, my main issue with using a wired headset with the Lightening port, is a mechanical one. I don't think that port will hold up like a 3.5mm.
Depends on the iOS device. ex: Post iOS7, my iPad 2 has become a crashing, laggy, nearly unusable piece of junk. Maybe with the latest and greatest hardware... but if you're running a bit older device, iOS isn't that stable in terms of apps either.
I'm not quite understanding the 'specialized simulated'. There is a DAC in the phone that creates the analog signal that is put out on the 3.5mm. They are just moving that DAC external (well, there still needs to be an internal one for the speakers and such too). Oh, and a headphone amp. So, in a $9 adapter, how good will the DAC and amp be?
That is possible pre-iPhone 7 too. It's not a new feature, it's the removal of an existing one.
What will people do in places that don't allow BT? (I've seen libraries that don't allow it, as it interferes with WiFi. Do airlines allow it?)
Heh, yea. Water resistant, not water proof! Sony got in trouble for having underwater swimming photos in their ads.
That's a good point. How will the DAC in that adapter compare to the DAC in the phone? I'd imagine neither is a very expensive component, but it certainly
can't be very good in a cheap adapter or pair of headphones.