1: It's a bokeh of Apple logo, which means it's about camera which is capable of shooting such DoF.
2: It's low light which means the dual lens.
3: Says 'See you'. Certainly about camera
4: 7th. iPhone 7.
Well since I am on T-Mobile JoD, I will be upgrading my iPhone 6s Plus to 7 or whatever Apple announces. On my Canada trip I brought both iPhone 6S Plus and Nexus 6P and I ended up using iPhone most of the time. Checked the latest Samsung Note 7 and it reminded me of Galaxy S4. Let's see if the next Android phone will make me switch back to Android as the daily driver. Or may be not. The family sharing plan that Apple offers across apps, games, movies and music is unmatched on Android and there is much more support for AirPlay than for Google Cast.