All that email is saying is that they are extending the 1 year initial subscription for people who signed up during the beta phase so that they have 1 year of subscription against a functioning app store.
Normally you have to renew annually - all this means is that this year the renewal date has been extended to 1 year from the opening of the App store rather than 1 year from when it was started.
I can only imagine it coming out on a Tuesday, didn't the iPhone 3G and iPhone and all the Apple events happen on Tuesdays?
The iPhone was released on Friday. The iPhone 3G was released on Friday.
The iPhone was released on Friday. The iPhone 3G was released on Friday.