It's a huge mystery. Check out
this thread on the Theme Parks forum (if you've got a few days to spare

).
I've been checking daily since 1st November. I received this response to an email enquiry on 8th May.
Dear Debbie,
Thank you for contacting the Walt Disney World Resort.
While we sincerely appreciate your interest, the hours for November have
yet to be confirmed. They should be released in the next few days.
We thank your for your patience and understanding.
If you have questions or need further assistance, feel free to contact
us.
Please include your full name, E-Mail address, and reservation number if
applicable on all correspondence.
Thank you!
We look forward to seeing you soon!
Sincerely,
Debbie Grant
WDW Online Communications
PLEASE NOTE: All information is subject to change without notice.