This is big. Bigger than a giant-size man-thing. Disney comics always keeps the original art, same policy that Fox set at Bongo with The Simpsons art. Marvel's stated policy has been that they own the art, and only return it as a gift. We'll see. Fred Hembeck sez, "I guess Howard can finally get rid of those silly pants now, huh?..."
Read an article on the deal's Eisner/Iger connection, here. Read writer Steven Grant's cogent thoughts on the purchase, here. And read a couple of Disney/Marvel limericks at Limerwrecks, here, and here.