So I just read this on GoNintendo and I thought I would share with my fellow GB members for those of you that preordered a 3DS from GameStop or EB Games like I did.  Here is the full post:
 

Here comes a nasty rumor about 3DS preorders that might make you cringe a bit. We're hearing that some GameStop locations may not be able to fulfill all of their preorders on the 3DS. It seems that a second shipment of the 3DS is due to come in next Friday, and hopefully that will be able to take care of those that don't get their systems on day one. Certainly makes you wonder what a preorder is worth, doesn't it?

If you're worried about missing out on day one, you might want to call up your local GameStop right now. See if your preorder secures you a unit on day one, or if there are going to be shipment issues. If that's the case, let's hope preorders are filled by the order in which they came, and not a first come/first serve basis.

UPDATE - A number of you have emailed in to let me know that your local GameStops have confirmed that there are some shortage issues, but luckily all those that have called in aren't in areas that will see shortages.

UPDATE 2 - Again, we want to stress that this is a situation, but it seems to be impacting a small number of stores. The main issues seem to be stemming from Georgia. The best idea is to call up your GameStop location if you're worried. Hopefully they'll know nothing of the issue, and report that all is well!

 
If anything changes, please post in this thread and I will try to keep this post updated.
 
Original Source: NeoGAF

This is how it always is. 
 
Every time.

Once again Gamestop fail at doing the one thing they are supposed to be able to do. 

That defeats the purpose of pre-ordering. Doesn't surprise me though, seems exactly like something GameStop would do. Just another reason why I don't buy anything there. 

" Once again Gamestop fail at doing the one thing they are supposed to be able to do.  "

Perhaps if this happens enough, people will FINALLY stop supporting Gamestop. 

Unless Gamestop is your only option you should never go there. I've pre-ordered once from them and they didn't get the pre-order bonuses in and when I look at their stock, at least in Canada, it is severely overpriced.