South Korea is a minimum of 6-24 months ahead of europe/us, when it comes to mobile technology. So if you can spot any new major development in the mobile technology/usage in South Korea, then you have lots of time to get ready in the US or Europe ;-)
Here is some of the latest I could find from South Korea:
http://laptopmag.com/Features/The-Seoul-of...-Cell-Phone.htm
or bookmark
http://www.sec.co.kr/ and visit that site once every year, so you know what is coming ;-))