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I guess A8 chip can not handle 4k streaming or to the good user experience level Apple like. Apple TV uses older chip. It appears A9 in iPhone 6S can handle 4K thus you will see 4K support in next model. Anyway 4K content is not mainstream yet.

We need Google to remove bundling Flash player in Chrome. Chrome for OS X has Flash built-in. Not sure about other build.

Appears to be still cooking in the lab. Similar to Ara and also Glass. Sounds like a research project that needs not answer the business question of how to make money. IBM, Microsoft, Apple likes to keep theirs secretive. Google likes to showcase.

In China it is pretty standard to use 70后(后=after), 80后 (born 1980-1989), 90后 (born 1990-1999) etc to describe the age of a person. Instead of "he is forty-something", you say "he is 70后". "Born in the 70s" might be a little lost in translation.