90%+ of users won't care about 1080p and 5.1 and half of the ones that think they care won't know the difference. Waiting for release for a relative handful of techies would be the wrong decision.
Another data point. My local CW affiliate ran DD 5.1 out of phase for at least the last two years. It didn't bother me until this fall when I started watching Arrow and The Flash. I emailed the tech department and 24 hours later it was in phase. Out of phase 5.1 didn't bother a single viewer enough to complain for over two years and the techs at my CW/CBS affiliates didn't care either.