According to Bloomberg Japan, Nintendo are set to announce the launch details of the Nintendo 3DS system. Nintendo will hold an event on September 29th 2010 where they will reveal the release date, launch price and shipment numbers of the Nintendo 3DS.
http://www.bloomberg.com/apps/news?pid=jpconewsstory&refer=jpconews&tkr=7974:JP&sid=aw6fGOsg.GBI
http://www.neogaf.com/forum/showthread.php?t=398358&page=131