Nintendo is cutting costs where they can, and apparently that means that if you buy a new 3DS XL in February, you won't be getting a method to charge it. That's right - it will be like buying an electric car without batteries. Nintendo figures that you probably already own a DSi or 3DS and they will be letting you use your older existing adapter instead. I think this is a bad move - as many, many consumers will probably buy the handheld console and not buy the adapter - until little Jimmy is crying because he can't play Super Smash Bros.
Rather than raise cost of New Nintendo 3DS XL by charging consumers for a component they may already own, we are giving them the option to only buy if they need an AC adapter.