The DS Lite will make its debut in North America on June 11. [UPDATE] The unit will be priced at $129.99, the same price as the current DS, not $149 as previously reported. (GameSpot regrets the error.) Though the DS Lite has been released in white and two shades of blue in Japan, the handheld will only be available in "polar white" for the US launch. This doesn't necessarily mean it will be long until DS Lite owners get the blues--Japan's DS Lite launch was also restricted to one color, with the blue hues following one week later.
Couldn't find exact details to quote, but this is supposed to include brighter screens, longer battery life, is smaller and a sleeker design (thought it was a foldable ipod the first time i saw it...)