No they are going to implement TrueHD DTS ...its the "new" standard...its amazing...the Toshiba HD-XA1 just got it via a firmware update...same is happening for the 360...eventually they will turn on TrueMASTER DTS...Thats the final holy grail...no HD-DVD player yet has it turned ON. Its a case of they got us the hardware asap and left the backdoor firmware updates to co-incide with the finializtion of the HD-DVD spec.
I am an HD-DVD author using the sonic tools.
1 title finished...almost 2
Also for those interested you can author HD-DVD's right now!!! Using the free Microsoft HD-DVD jumpstart kit you can do menus,interactivity and everything...for encoding your videos you need quite a few tools but it can be done at home right now.
You can record to DVD-5 or DVD-9 and write with nero using Xbox-compatibily mode UDF 2.01 and you discs will play on the xbox360 hd-dvd player...its awesome.
Just make your menus,buttons in a 1920x1080 photoshop .psd and you can do slices and implement via the dev tools...its easy.