On Thursday, Nintendo announced a new Nintendo DS “platform” as it called it, the Nintendo DSi.  Similar in look to the DS Lite, it has some evolutionary changes.  Nothing revolutionary, though.  And the company will continue to ship the DS Lite.For example, the screens are slightly larger, at 3.25″.  The device is slimmer, about 12%, due to the dropping of the GBA slot.  It will, however, include an SD slot.  Additionally, it gains an external 3 megapixel camera and an internal