1. The phone will be available on T-Mobile and Verizon (Magenta/Red)
2. Camera will be good under low-light conditions without flash.
As an aside, I find the attention to photography by Apple, Google, et al quite intriguing. It makes total sense. On social media, we posture, we put out our best self. Having sophisticated pictures (bokeh? yeah that'll make it look fancy. Not a lot of noise (as is the case for pics taken in low light)? that's another something). In a fantastic way, it is actually the best way to advertise the phone -- the photos people take do it for you! You see your friend's great low-light pics, and you realize your phone can't do that. That's like one of the few remaining forces to compel you to invest into a phone: a phone being a device that's increasingly becoming a commodity for its lack of distinguishing factors.
I wonder what will be the next area of war for phone manufacturers ... maybe AR/VR? Finally wireless charging that works well? Finally battery that can last days (of semi-active use) instead of hours?
The other, called EXTRAS, defined but not referenced elsewhere. It contains two entries, pointing at these images: https://madeby.google.com/static/images/tenfour/extras/002.j... and https://madeby.google.com/static/images/tenfour/extras/001.j....
EDIT: oh, turns out this chap found it a while ago: https://twitter.com/hallstephenj/status/778033737040666624