I just found a couple of websites stating September 25 as a North American release date. I'm not sure if that's accurate, but that date is a Tuesday so it would make sense. I'm thinking of waiting for the GOTY edition if I can confirm the date. Here's the two sites that I found:
Wow I had no idea there was going to be a GOTY edition, I got a 320 GB PS3 back in June that came with Uncharted 3. It might save money to get the GOTY edition as I don't have any of the DLC.