Cut and pasted from the site:
We are excited to share that we have added 11 new dates for New Fantasyland Previews for Passholders due to your interest in these opportunities. The additional dates are November 6-9 and 12-18, 2012 with multiple time slots throughout each day. Please click here http://click.passholder.disneyparks.com/?qs=81b265f3c36d3ce5a6bddb0850747be27372362e06a82899edbb23ad044e511e67c5f5738312c0f6 to view the specific time slots.
We are finalizing the sign up process and will provide more details soon. If you already registered and have your email confirmation, you do not need to take any further action.