The article refers to the limits of our technology. Within a few years, when we get to it, we will need to find another path to keep pushing it. But that will require a huuuuge investment on many sides...

@Manicdan: don't think so. A mobile gpu rated @ 50W, to be as powerful as a GTX580 these days, will require an awesome integration node. Keep in mind that nowadays we can have more or less the power of a 4870 as a mobile gpu, but not much more. If you want to double that, or even more, we will need probably less than 22nm. So...not happening within this year (2011) nor probably next.