I would wait until Black Friday if you live in the states. Certainly the best time to buy anything. Stores will usually have sales on them either at cheaper prices, or if you buy one you get a free case or an iTunes store card.
This way, you will pass the Oct. 14th event, and if they don't change anything, you will be getting something out of it on Black Friday (Day after Thanksgiving).
EDIT - Just FYI, my iPod Touch's screen cracked when it was dropped (still works just fine), instead of getting another one now, I'm waiting for Black Friday as well (unless my iPod stops working). I've been saving money for some time now to get some things I need during that day (I need a new HD, another large flash drive, the iPod Touch, a plug-in iPod charger, an iPod Radio Dock, a set of speakers for my HDTV, another controller for my PS3, and some clothes).
And as for the camera, I'm not waiting for that. I want the 64GB iPod Touch. I have a Blackberry and I like its camera with flash just fine. I can take my pictures and upload them from my phone, text them to my friends. IMO, without a service plan, a camera on the iPod Touch is pointless. And if I wanted to film something, I've got a much nicer camera for that!