I remember Apple released the PowerBook line with 12-inch and 17-inch models in 2003 and left the 15-inch TiBook unchange for 10 months. The table turned this time.
3.06GHz
8GB Ram
18" Screen
Matte/Gloss (after apple hears everyone cry about only gloss)
firewire 400 and 800
3 usb's
and all the goodies that come with the 15"
Since when has a 3.06 ghz CPU been guaranteed for the 17"? You have to remember that this site is called Mac Rumors so this rumor (which I don't remember hearing) doesn't have to be true, and everything here should be taken with a grain of salt.