According to some reports that have been published around the web, the Nokia 800 is to sport TV Out and have the ability to be used as USB mass storage. These features were indeed found on the official specification read out on the Nokia website, but have since been removed. We will be heading over to the World of Nokia to confirm if said features exist or if this was simply an error (For the record, Windows Phone 7 OS supports neither, so we're highly doubtful that this will be reversed).
FLAC is reportedly supported in addition to Ogg Vorbis, which could be down to the Nokia Music app. Zune doesn't support either format, which raises some red flags in our book. We'll work to verify.