I attended the Destination D event in WDW in 2011 and it was a similar format. A parade of past and present imagineers, artists and others who have helped create and shape the Disney we know and love.
If you are a Disney history buff like I am- this is the stuff we live for! I only wish I could have made it out to California. Dick Van Dyke, Alan Mencken, Tony Baxter!!! Hopefully their next event (if they're still around to have one ) will be in Orlando.