I'm not too sure that DTS is a dying format on DVDs. Quite a couple of discs I bought recently had DTS - including many old Hong Kong films where I'm not sure remastering in DTS adds anything to the enjoyment of the film. Examples :
- The Dec 2006 Region 3 Fortune Star Digitally Remastered release of John Woo's
Bullet In The Head has a DTS track.
- Likewise the Region 3 Fortune Star Digitally Remastered re-release in Nov 2006 of Sammo Hung's
The Prodigal Son also has a DTS soundtrack (though their previous budget line release of the film probably did not).
- The Japanese WWII flick
Yamato I bought in Nov 2006 (Region 3 - Hong Kong) also offers DTS on top of standard Dolby Digital 5.1.
- The Region 3 Hong Kong version of
Shinobi released in the summer of 2006 features a DTS track.
I also noticed that US films released as Hong Kong Region 3 DVDs have DTS. For example, the
Resident Evil : Apocalypse disc I have has DTS, while I believe the Region 1 US version does not (though please correct me if I am wrong). Maybe this is a Region 3 thing
Then again, the US Region 1 DVD version of
The Proposition does have DTS.
What I do find true is that very few cinemas in Hong Kong had DTS systems installed. Don't know whether this is true for cinemas in the US or Europe - but if few multiplexes have DTS systems then why should new films come with DTS as a standard? In this case, the studios need to re-master a DTS soundtrack specifically for the DVD release, which obviously means extra cost to them.