D23 officially takes over the One Man's Dream attraction today at Disney's Hollywood Studios park. I was able to interview Becky Cline of the Walt Disney Archives about this change and what it means for the attraction.
While not much about the attraction will change, this is a very good sign that Disney is committed to keeping the attraction around a while longer. It is nice to see some Disney history in the Florida parks and I'd be happy to see the trend (getting treasures from the Archives in front of public eyes) continue at WDW and in all of the Disney parks.
I was not able to get confirmation about any such D23 sponsorships of other attractions at Disneyland or elsewhere, but one can assume that if the association brings additional guests to One Man's Dream that we'll see the idea spread.
Personally, I'd like to see the Archives push for occasional updates to the One Man's Dream attraction and would like to see them be involved with the new Opera House exhibit at Disneyland (or perhaps a Walt Disney exhibit at the new DCA).
You can read my posting about D23 and One Man's Dream on our Front Page here: D23 Goes Hollywood