Previous patents have suggested that motion control and force feedback will be included in the next DS, but this patent discovery could offer more substantial information on what Nintendo are planning. Here is a snippet of the patent:
"A game apparatus includes an LCD, and a touch panel is placed on a top surface of the LCD. A player instructs an enemy character displayed on the LCD by use of a stick to attack the enemy character. For example, in a case that the enemy character exists at a depth of a game screen, little damage is applied to the enemy character, and a weak vibration is applied to the game apparatus. Conversely, in a case that the enemy character exists at a front of the game screen, much damage is applied to the character, and a strong vibration is applied to the game apparatus. In either case, the vibrations are transmitted to the fingers or hands of the payer via the stick."