I'm waiting for Empire Direct to call me back as I'm going to try and swap mine for a different one that does DTS. What's in my favour is that there also seems to be a problem with the component output on mine whereby the picture keeps disappearing so I could return it as faulty, no point swapping it for another one though if it doesn't do DTS. Might be a cheap one on the classified forum soon, if you can use the HDMI output and aren't bothered about DTS it might be worth considering (would probably sell for £170 odd)
Cheers
Andy