An update offering a range of improvements to Xbox 360 HD DVD operations is now available over Xbox Live.
Details of the auto update, which will install itself next time users log into Xbox Live, are listed below.
Added option for user to select from the following audio output formats via TOSLINK or HDMI:
o Digital Stereo (2 channel PCM)
o Dolby Digital 5.1
o DTS 5.1
o WMA Pro
Added "Dynamic Range Control" toggle for digital audio output
Improved HD DVD networking support
Improved HD DVD title compatibility
Improved performance with MPEG-4 AVC / H.264
1080p via HDMI is supported on the Xbox 360 Elite with HDCP compliant displays
Improved parental controls
For those without access to Xbox Live, the update will be available for download later this week from Xbox.com.