Bloomsbury is notifying their contest winners for the JKR reading/signing by email now.  The email contains all the information winners would need to know to accept their prize, and begins as follow:

Dear (super lucky Harry Potter fan’s name),

J.K. Rowling and the Moonlight Signing, Friday 20th/ Saturday 21st June 2007

We are delighted to confirm that you have been selected in the prize draw to attend JK Rowling’s book-signing of Harry Potter and the Deathly Hallows at London’s Natural History Museum on the night of 20th/21st July 2007. This email contains important information so please read thoroughly and use the link at the end to respond.

Thanks Leaky!