Nintendo expects DS and DSi to 'coexist' in US, gamers unimpressed

[TWRoO]

^ The DSi has 2 touchscreens I think, and an SD card slot instead of the GBA slot.

but yes, there will be very few games that require a DSi rather than a normal DS, and those will likely be odd things like Segas Warioware thing (Project Rub?)