After weeks of prodding my dealer to escalate the ITBCM Kit availability question at Chrysler, the service manager did get a reply from Chrysler Engineering via his area representative.
Chrysler Engineering would not go into exact details but they said they are not comfortable with the kit they are working on. It had something to do with wiring that could cause problems. They anticipate now that the kit will be available in Feb 2011.
For them not to release the ITBCM kit Chrysler is obviously concerned about something going wrong for those who have already installed the replacement ITCBM controller.
I suggest everyone who has purchased the controller replacement part contact their dealer service manager and try and dig out what exactly the problem is. I would hate for someone to have a problem while towing no matter how remote the possibility.