I heard on the radio today that the release date for the iPhone is in Feb 2008. Not sure if this has any link with a possible release of FW 1.1.3.
Thought I would put this out there anyway..
iPhone: 8GB US week 48 (1.1.2 OTB)
Downgrade 1.1.2 to 1.1.1 & Upgraded back to 1.1.2 using Windows
Activated but not unlocked