Spong is reporting that the Nintendo DS will see a “a host of different peripherals” released in the coming year, with the Metroid Pinball Rumble Pack being the first of many add-ons for 
the portable. Apparently this comes from Nintendo representatives at last week’s DigitaLife event in NYC. All future add-ons are said to make use of the DS’s Game Boy Advance slot.
What else could that little cart slot be used for? Your guess is as good as mine so it should be interesting to see what Ninty has up their sleeve.
[Source: Spong]