Here's the official message:
We've got a big update for Wizard101 tonight, but that means we have to take down the game.
Wizard101 the game will be unavailable Friday February 13th from 3am Central US time until approximately 6am Central US time.
During this time, you will be unable to log in to the game, and players who are already logged in will have to log out.
The Wizard101.com website will also be updated, and may be offline intermittently during the game downtime.
Please visit our Patch Notes Page for more information!
There's some neat things coming with this patch! I can't wait to log in and check it all out!