According to a news published at Engadget, the Blu-ray and HD-DVD combo drive recently announced by LG has some unpleasant details not evidenced in the original press release by LG:
The new combo player doesn't support the HD DVD's interactive features, iHD. That's right, none of it - no PIP, next-gen menus, user bookmarks, HD DVD downloads/updates - nothing that will "WOW" the average Joe.
Interactive features are instead supported for the Blu-ray format, making this "combo" drive more Blu-ray than HD-DVD oriented.