Less than a year after the launch of the Nintendo DSi, Nintendo announces another addition to the DS line, the tentatively named Nintendo 3DS. As the name suggests, the system will allow players to play games in 3D - even without a pair of 3D glasses. So far, there's no information as to whether the system will have higher resolution graphics than the DS. However, DS owners can rejoice because the system will be backwards compatible with DS games. According to Nintendo, they will have more information available at E3 and the system will go on sale in the fiscal year starting in April 2010 and ending in March 2011.