DS revision in 09. It won't be mandatory for all games, it will have some games that can only be played on it. Built in new hardware functionality, but basically still a DS.
New handheld announced E3 Business and Media Summit 2010 Keynote Address. Mid July 2010. It will not use the GameBoy branding, too confining to "gamers" and will not adopt the DS moniker, but will be the same sort of thing, simply to continue with the brand equity they've built
It will be DS compatible
It will be GBA compatible, not because they want it to be but because of DS peripherals that use the GBA slot. DS games will shut down extra hardware (like Wii does with GC)
It will use solid state memory.
It will not have internal memory of its own, but it will feature media playback capability via SD card and adaptor. A more locked down PlayYan sans PlayYan name. Will not have built in SD card or memory because of piracy fears.
Will launch with four titles from Nintendo. Two "casual," one "hardcore," and one utility ap (probably the media player). It will be "online out of the box" but no games will support it till the second set of releases.
Release Date (US): 11/14/2010
MSRP (US): $169.99