After they already announced one set of rules, AT&T is now announcing that tomorrow, they will let you check if you qualify for discount pricing two days from now.

Stay with me…

The way I’m reading this, tomorrow you will be able to use AT&T’s upgrade website to see if you qualify for the fully-subsidized price on an iPhone 3G S. The general rule is that if the site today says you’ll be eligible in July, August, or September, tomorrow it will say you’re eligible this Friday. If you’ve already pre-ordered, either AT&T or Apple will provide a refund.

So, wait until tomorrow. Regardless of what the website says then, you should probably call AT&T and double-check. With some luck, you’ll be able to get a 16 GB iPhone 3G S on Friday. God you speed.