You missed how everyone will be talking about the iPhone 6 the moment after this iPhone is launched. And threads like "should i get the iPhone 4S or wait for the 6?" or "should i get the Galaxy S3 or the 6?" etc.
Excellent point.
Also, don't forget the dozens of threads from search-challenged people asking which capacity model (16GB/32Gb/??). I understand asking how much storage Y hours of video take up, or how much storage varius apps use, and I don't intend to be mean, but I am surprised at the prevalence of the inability to make a decision for oneself.
One more: demand will likely exceed supply and we'll see all the resulting threads about where to buy one, people who order on day one from AT&T or Verizon or whatever other carrier and are surprised when the carrier f's up their order and/or doesn't deliver as fast as Apple.