The door to JK Rowling's "private room" on her official site is open.
In the past, this has revealed important new information about the next book, so we might learn something about book 7 soon.
From the ongoing discussion (spoiler warning) in HPANA's forums, some people may not be able to get inside (for technological reasons - caching, cookies, etc). Be patient and good luck!
If you really don't want to do it yourself, highlight the area below for the complete solution:---====
Go to JKRowling.com. Click on the eraser on her desk.
Click on the vase. A rock appears. Drag the rock to the mirror and smash it. A key is revealed. Put the key in the door's lock.
Open the note, and then repair the mirror by typing "reparo".
Click on the door in the mirror (to close it), and the main door opens!
Then there's... a black thing with a gold thing on it. Click and drag the gold thing to point straight up.
Take the W.O.M.B.A.T. quiz!
Get a student ID code.... and then?====---