Yes, there are DSi games that are slightly enhanced, gernally having better fps and may have features that allow the usage of the DSi camera.
consideering that the dsi has all the ds features but no gba slot i would have to sa the dsi
Yes but you have to buy a special card to insert into the dsi sold separately
There is no DSI 3DS comming out, the 3DS has DSI features and the 3DS is the new version of the DSi but, remember the 3DS is 3D, Seeing is believing.
from my expectations, I see the DSi seems to have better features then PSP 3000.
iPod of course
The DSi has camera and video features.
No, because the 3DS games have a special shape that can't fit in the DS or DSi
special features
they do not have special features
It plays all the games the DS lite can play as well as special DSi games
No, you do not. The DSi is simply an advanced version of the DS lite. You can play your DS games and only your DS games on the DSi, minus the fact that you can download games from the DSi store.