The Disney Gallery has a link up for "The Art of Disney Parks - Where Dreams Come True Event" to be held on September 13 and 14, 2007. It appears to be a merchandise event, in conjunction with the Laguna Beach Festival of Arts. The merchandise will be available at the Festival of Arts for viewing from July 1 to August 31. Annual passholders receive a 2 for 1 admission discount to the Festival. Regular Festival prices are $7 for adults and $4 for seniors and students. Discount does not apply to Pageant of the Masters.
The merchandising event will also feature an auction of "treasures from our private reserves including items from the 50th Anniversary celebration and beyond".
I don't think I'd be interested in merchandise for this promotion, but the 50th auction could be interesting. If they had a not-too-expensive auction-only ticket, like the 75 years of Mickey thing, I'd be interested.
(See, I knew it - auction for the 50th stuff.)