Nintendo is expected to reveal the information at the press event, but MCV has caught hold of the news early, confirming that the console will arrive in the UK around the 25, March 2011 and will cost somewhere in the region of £200-£230. However, we'll still have to wait till the 19th until full clarification of the exact price and date.
The handheld device will be the successor to the Nintendo DS, DS Lite, DSi and DSi XL, and will introduce a major new feature; 3D visuals without the need for 3D glasses. The 3DS will also sport a 3.53 inch widescreen LCD display that supports a 800x240 pixel resolution and will be backwards compatible with games from older models.
Source - MCV