Stopped off at my local Walmart early in the day and the clerk said they weren't getting any today. Called the store later and a guy (who seemed to be a manager) said they would be getting some, but probably not till 6pm. I had to bring my daughter to a Piano lesson for 5pm. I dropped her off 5 minutes early, headed to Walmart and got there at 5:05pm. There was a small line (about 5 people) and it sounded like while they didn't have any in stock, they were getting some (possibly from another local Walmart). Their 3 16GB models were already spoken for by 3 guys in front of me, but they said they had a 32GB available. I said, 'No thanks' and left. I was tempted to go with the 32GB, but this is more of an impulse buy for me as I don't have any major need for it, and I the $100 premium for an extra 16GB of storage doesn't appeal to me. If it was $50, I probably would have done it.
Oh well. Maybe I'll stop at the Apple store tomorrow. They'll probably be mobbed, but I suspect they'll be getting shipments in multiple times a day. If there's a huge line, I won't bother. 30 mins in line would be my limit.