Both Sony and Nintendo forecasted that they'll sell around 6 million DSs/PSPs in Japan this fiscal year. With the sales number from Japan for the past few months, it goes like:
[the week of June 12 - 18]
DS Lite - 141,487 [2,329,621] units
PSP - 24,653 [870,267] units
NDS - 22,748 [915,404]...