The following was just announced on The Clone Wars supervising director Dave Filoni's Facebook page:
[T]his is a three day auction so no time to waste!
This is an extremely rare poster that was only made available to select pass-holders at Star Wars Celebration V (2010). The artwork was done by Dave Filoni, Supervising Director of the hit series Star Wars: The Clone Wars and features fan-favorite characters - Cad Bane and Boba Fett.
The poster includes original signatures from George Lucas, Dave Filoni, Daniel Logan (“Boba Fett” in Star Wars: Episode II Attack of the Clones and Star Wars: The Clone Wars) and Corey Burton (“Cad Bane,” “Count Dooku,” and “Ziro the Hutt” in Star Wars: The Clone Wars).
All proceeds from this auction will go to support the Aids and Breast Cancer Emergency Fund of San Francisco.
The poster itself measures 24”W x 34”H. Please email with any questions. All payments must be made via PayPal within 24 hours of the end of the auction. Shipping will be provided via FedEx. A tracking number will be provided and a signature will be required for delivery.
You can see pictures of the poster and bid for it on eBay.