You may already have heard that nVidia will be supporting VIA Nano CPUs with Ion 2 but you may not have heard the latest rumour, originating from Fudzilla, that the updated platform will feature notably more graphics power than its predecessor.
According to Fudzilla Ion 2 will feature double the 16-shader's offered by the 9400M graphics chip in Ion, to 32 - or possibly more - giving it a decent graphics boost. CUDA applications will also see an improvement, although as there are relatively few that I'd expect anyone working from a netbook to use on such a machine so that's not much of a selling point. However, Windows 7 will be able to leverage GPU-acceleration so the added power Ion 2 is said to be brining may well be welcome come October.
Also notably, Ion 2 is, thanks to a die shrink, supposed to offer this increased performance without an increase in power draw. There's also the potential that in reducing the die size of Ion 2, nVidia will be able to bump the price down a little and, as such, make its platform that bit more tempting to manufacturers and consumers alike.
Ion2 is expected to launch before the year is out, so we should only be waiting a few months to see if this speculation carries any weight.