Apple has released DVD Player 4.6 which it recommends for all users of the DVD Player application running Mac OS X 10.4 'Tiger'.

The 8.6MB update delivers added support for DVD Studio Pro 4 authored HD DVDs.

Key Updates include:
Additional support for playing DSP 4 authored HD DVD folders from DVD discs and hard drives.
Additional support of discs with both SD and DSP 4 authored HD content.
Improved Global Player settings.
Improved usage for last play and disc info dialogues.