In an article on MTVNews.com, Stephen breaks down the features of the DSi, and what they offer for your gaming and non-gaming needs. Hereís a taste:
The DSi also has some little perks for more hard-core users. It lets players swap DS cartridges without having to turn the system off. It supports WPA web encryption, which the original did not. It has a slot for an SD card for greater storage. Its firmware can be upgraded, meaning that, like a PSP, it might be able to get new features after its release. And it supports what Nintendo promises will be weekly downloads of new content.

http://multiplayerblog.mtv.com/2009/...-dsi-worth-it/