For those who are considering upgrading to Version 8; you loose the playability for HD DVD discs. The new version drops HD DVD and concentrates its Hi-Def towards Blu-ray only.
I found that you may have both Version 7 and 8 installed at the same time without any conflicts. This way you still have the option of a HD DVD player software.
I decided to un-install Version 7 and use Nero ShowTime with the Hi-Def plug-in and watch my HD DVD movies.
Just a side note; the new Cyberlink Hi-Def advisor has also dropped the ability to scan for HD DVD and only supports Blu-ray now.