It's my understanding that Matt has taken the position that everything that is "official" WordPress and on WordPress.org needs to be controlled by Automattic and thus WordPress Answers here on StackExchange will never be integrated with "official" support channels. Of course that's what an outsider has seen looking in and I could be woefully misinterpreting; if so I hope Matt or someone who can speak for him will clarify.
That said, I don't think it really matters one iota if WordPress Answers is "official" or not. The StackExchange platform rocks and IMO is producing far better results than the official channels for either WordPress or any other platform for which StackExchange has a site for. So I'm actually quite happy to see it stay "unofficial" for at least two (2) reasons:
People can say and do things on WordPress Answers that might get filtered if this were an "official" channel,
The calibre of questions and of answers here is much higher than at wordpress.org/support in large part because developers are here and end-user bloggers congregate at WordPress' support; integration might lower the overall quality of this site.
That said, what's your interest/motivation in seeing them merged?