I visited Barnes and Noble today and they had a sign to "reserve your copy of the new Harry Potter book today"! This puzzled me. If there's no release date, why bother starting to reserve books? I inquired at the desk if a release date had been announced. They said no. Then the gentlemen went on to say slyly, "The new movie comes out this summer."
I said, "ooh, that would be a nice tie-in wouldn't it?"
He smiled. Then I said, "Well the others seemed to be released in the summer."
He said, "Yes, and there are rumors of 7/7/07, because its the seventh book."
"Ahhh, that would make sense. Thanks." I went on to reserve my copy.
You heard it here first folks! I predict 7/7/07!