StarWars.com has posted more info on ticket sales for Celebration 3. Info on pre-registering for tickets, and prices, as well as info on a special gift when you pre-register for the 4 day pass. That gift being a special "topper" with the Vaders helmet on it. There will also be 3 other toppers available at the convention.
It also seems that this year they worked out some of the flaws of C2. One being that family members, at C2, could not partake in some of the special fan club events. This was because you only got one fan club lanyard for each subscription, and many people went with their families, thus their family members were left out in the cold when it came to events that needed the lanyard for entry. To read all the info, click on the thumbnail below: