Are you going to buy the launch-3DS or wait for the second version? Game Boy Advance - June, 2001 Game Boy Advance SP - 2003 Game Boy Micro - September, 2005 2 years between the first two. Another 2 years after that. Nintendo DS - November, 2004 Nintendo DS Lite - June, 2006 Nintendo DSi - April, 2009 2 years between the first two. 3 years after that. Judging by that pattern it should be about 2 years before the next revision of the 3DS.