Although there is no 'official' response, Apple is aware of the issue.
I decided to email Tim Cook last week explaining my disappointment regarding iOS6 and my iPhone 4S regarding the WiFi issue (greyed out) and my Bluetooth also doesn't work which means I can't connect to my car kit. It is against the law to use your phone without a kit in Australia. A long story short, I advised that many people would be happy with an official response that it is software and a potential fix date.
Thinking that nothing would come of it, I received a phone call from Apple Care Australia on Friday stating that Tim had passed on your email. Their response to me is that Apple is aware of the issue, and they are working on the fix in the next update; however they can't give a date of release until it is thoroughly tested etc. Note they also do browse the user forums the forums for information on issues users are experiencing for fixes etc, although they do not respond to them.
Apple care were also kind enough given that my job as a sales rep requires access to the car kit, a swap out of the phone.
Again, although a bad situation it shows that Apple's level of customer services compared to competitors (in my opinon) is exemplary!