Walt Disney World will be offering an additional set of passholder previews of the Fantasyland expansion.
More passholder previews of New Fantasyland will be held November 6-9 and 12-18. For the time slots, see this. You can sign up to try for as many as fit your schedule, and Disney will fill the slots randomly.
Sign up needs to happen by the end of October, and Disney will email results around November 2.
To sign up, login on the passholder website and click through the links.