Just checked the Art of Disney Parks website...
On January 31, they will be selling a deluxe print at the Main Street Gallery from 12-2 only (for now). will be there for signing too. After 2, the art goes back away until it is officially released in the summer.
http://psc.disney.go.com/eventservices/artofdisneyparks/media/_40_Event.jpg
I really like this so far!! I wish I could be there on the 31st... it's disappointing that they feel the need to put it away until the summer though...
Event link:
http://psc.disney.go.com/eventservices/artofdisneyparks/event/wdw_shagsneakpeek.html