since the old dsi forums weren't carried over and the only one we have is about the release date but this is about the features and how it is basically a portable wii

here are a few articles on it (not the thing about it being a portable wii)

http://www.nintendo.com/whatsnew/detail/Q5D4ti_bPqJO_I0Oup0AMFudaUOLz6C7

http://www.pcworld.com/businesscenter/article/151781/hands_on_with_nintendos_dsi.html

http://www.joystiq.com/2008/10/02/nintendo-officially-unveils-nintendo-dsi/

and if you don't want to read them they pretty much talk about

1. 2 cameras
2. music playback
3. dsiware
4. dsi web browser
5. the different stuff you can do with the photo channel and music stuff
6. how its 25% bigger
7. how its thinner
8. the power button
9. the volume button
10. the new brightness settings
11. the new price

but to mii i think that nintendo should just call the dsi a portable wii, the only difference is its portable and the controls but other than that its pretty much the same basic build up (the home screen with all the different channel, the sd card slot, the dsi shop, the web browser) but the dsi has a better build up with the 2 cameras and music playback. hopefully nintendo will think about the dsi when making the next wii