A new shape, to accommodate the following design changes
FOUR buttons on the face of the unit, in addition to the two "shoulder" buttons (8 inc start/select)
Back-lit screen (though probably using some sort of front-lighting solution, rather than a true "backlight")
Flip top over the screen, "reminiscent of the later Game & Watch"
A proprietary slim-line battery (presumably rechargable Lithium-Ion) providing 10 hours of play
Faster processor
More RAM
A sale price of 10,000 Yen in Japan ($81 in the US)


no one knowws when or where but sounds good to me