I had 1Gb/s fiber to my home in Tokyo for the last 5 years at least. That Sony is providing 2Gb/s now is not particularly noteworthy, except that thanks to Google recently offering 1Gb/s in the US, it's now in the public consciousness, whereas beforehand most of the world hadn't realised just how far ahead Japanese internet service was.
I wonder what they get in Korea... it wouldn't surprise me if they 1Gb/s was standard there for years already.
What is noteworthy to anyone with such a fast connection, is that most of the internet as we know it is throttled at speeds way below that anyway. It takes 40 or so connections to max out my download speeds from usenet.