Okay, this is coming together. If you click the Epicurean Foundation's website, you see a "save the date" for what looks like a fundraising dinner on 12/8 at Caesar's. So Stevie is probably going to do a song or two at this event and then perform the full public show as an additional benefit.
http://www.epicureanclub.org/
Edit: never mind, Curtis has already posted the save the date.