Nintendo made a secret announcement this week when they unveiled plans for a new handheld system in the DS line. The new Nintendo 4DS will have all the perks and attributes of the 3DS, with the added benefit of tearing a dimensional pathway into unknown worlds.
Nintendo has stated that the 4th dimension won't directly affect gameplay, although they couldn't promise that abominations from the nether realm wouldn't eviscerate players while they tried to complete the latest Phoenix Wright or Animal Crossing.
The announcement didn't reveal the entire spectrum of the 4th dimension, although it did include a small teaser, when the temporal distortion of our modern timeline turned part of the Nintendo office into an old west saloon. More details will be coming in future months. - Mike Burdette