Surely this would be a continuation of .608 so would contain the Puma fix also? I asked the guy on Virgin chat (for a laugh) to see if he knew anything about it and he said it's being 'released November 27th'. I'm sure these guys just throw darts at a nearby calendar to troll customers.
router in modem mode and the update was applied and killed my internet connection (i know as i was out and my hive stuff went offline). When i got home i restarted the hub3 and the update was present. Not exactly seemless but at least i have it now.