Whatever the 3DS ends up costing, Nintendo has at least guaranteed a time frame of when the new portable will be available in stores.
“One thing, for sure, is that we will launch in all of our major markets by March 31, 2011,” Nintendo of America president Reggie Fils-Aime told Industry Gamers yesterday.
When asked about the absence of specific pricing and availability, Fils-Aime added, “The reason we haven’t announced a launch date or pricing is that we wanted to get reaction first.”

So Nintendo wanted to get a reaction first eh? Well what about the reaction for the price.
If something doesn't happen by March 31st when someone said it would happen by March 31st, what is called the very next day?
That's right: an April Fool's joke.
So now that reaction has been so positive they will set the price higher.
I love how everyone is acting like this is a release date.
lol, a friend of mine told me (he watched g4 instead of watching it on the nintendo website) that fils-aime said to expect at the very least a holiday release. i know most of you might not take this with a grain of salt, but he doesn't lie about such things.
…NEED IT NOW, PLEASE!…
Nintendo of Europe leaked the release date (by accident) for Paper Mario 3DS and it gave it a March 25, 2011 release, so its definitely within the march 31, 2011 timeframe.
During that G4 interview with Reggie, they brought up Donkey Kong in the same breath as the 3DS. I think he was referring to DK being out for holiday season.
On Sunday, GameTrailers TV show on Spike had an interview with Reggie, and it went something like this:
GT: So 3DS will be out March, right?
Reggie: We didn't say that.
GT: Holiday?
Reggie: We didn't say that, either.
So at this time, it's still unknown. Other than they want it out in people's hands before the end of March. But any narrowing down of the date hasn't happened yet.