If you're an hour ahead the server time, your time will always be the time statet +1 hour. So As they said it's gonna be up for 8AM for you it should be 9AM.

I think however that they want to keep all the servers running on the same version so that there are no differences between players and no complaints, so as the UK and HK servers are still down for maintenance it might be that everything will be up again when all the maintenance is finished.
The stated that they started working like two hours ago, so it might take only one more hour, obviously it could be more.