With the release of Mac OS X 10.6.5 and iTunes 10.1 now in the past the pathway is clear for the release iOS 4.2. Although originally expected on November 12 rumours now point towards November 16.
The report which comes from the largely accurate iPhoneHellas points towards Tuesday, November 16 for iOS 4.2 release and is backed up by reports from MacStories which states that the push-back has been caused by a Wi-Fi problem on the iPad.
It is also possible that a second golden master of iOS 4.2 will be released to developers.