I was looking for a case for mine today and went into AT&T. I asked the guy if they had any cases and he said they don't even have the phone yet and told me it's still in pre-order. I was somewhat surprised because I got my N4 from Best Buy yesterday. I blurted out "So Best Buy has them and you don't"? Well, I think I rubbed a little salt in the wound by saying that (unintentionally) and he got snippy and said "they worked out their own deal with Samsung".
In short, you probably just want to keep your eye on the Best Buy web site for in-store availability. That's what I did and I ended up snagging one that someone had pre-ordered and didn't pick up.
Good luck!
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