Let the hive mind of Engadget get that for you.
"I'm in the market for a new phone and money isn't a limitation. I'm also not partial to any particular US carrier, but here are some of the features I'd like to have: WiFi, GPS, good coverage in lots of places, push Gmail (a must!), physical keyboard (a must!), a touchscreen, decent battery life and a relatively slim body. And please, nothing that has a fruit logo on it. No offense to the fruit fans, though. Thanks!"
I'll bet this change is an advance change for the benefit iPhone users so that the updated prices aren't directly associated with the iPhone release. If Apple is getting a cut of the profits from iPhone users and it also makes it easier and more desirable to use the data Cingular is going to ask for more.