As for a link this is the best i can do http://boards.gamefaqs.com/gfaqs/genmessage.php?board=930752&topic=41565144&page=1
sonic582 who replies to this topic confirms it and as he claims to get the information from Nintendo and has been correct for at least the last 6 weeks as least - everytime on a friday then im inclined to belive this.