I just wanna say there is hope for this, please look @ my convo with a plextor rep:
Me: Is there a firmware update for this 8X DVD+R drive that will make it to be able to burn dual layer disc? I've heard rumors about this.
PLEXTOR: Until the Dual Layer standard is finalized we cannot offer the feature, once the standard is finalized our perspective may change.
ME: Thank you. Will it be possible for me to request Plextor to keep me updated on this issue?
PLEXTOR: Yes, your email will be added to the growing list of customers wanting this feature