+ It won't. The international language already English and that won't change (India, North America, Europe - most of Africa, the Middle East are already English as international lang. even China esp. Hong Kong, Singapore) - but Chinese may become a 'sphere of influence' language in surrounding countries - much like Spanish or French. Of course it kind of that already.
+ The issue of not releasing documentation in English is odd, given that English docs would enable them to access maybe a 5x greater market. And for the cost of what? Clearly, it's a strategic decision on their part - there's some kind of impetus behind it. Possibly they don't think it's ready. Who knows? But it's not likely an oversight. It was a decision.