BUY NOW!
I, uh, can't find an official site to confirm this, since Nintendo didn't want people to know, and had nothing to do with it. All I can say is go to your local shop, they may have them now!
Here's a straight-up quote from DS meet, probably one of the most trusted non-nintendo sites for news:
It seems like Nintendo decided to ship their beloved new handheld redesign early to retailers in order to build up sufficient stock to be able to combat the inevitable frenzy of fanboys hoping to get one on day one. There's one thing they forgot: supply trucks aren't invisible.
To keep it short: DS Lites are in stores, and they are selling them, even though they're not allowed to, officially. So, if you happen to live close to a Wal-Mart or something equivalent, try walking in and see if they have any DS Lites... you might just get one!

