On Thursday 27th from 07:00 there will be prolonged downtime for server maintenance to upgrade the server hardware. I am unsure exactly how long this will take, however 2-5 hours is likely. After this time the server will have a new IP so a patch will be released which is required to connect to the server.
The server will come online with double exp and if I have time some sort of Christmas event!!! I hope you all had a good Christmas.