Players who are planning to purchase both Pokemon Ultra Sun and Ultra Moon will be able to buy a special edition steelbook containing both games.
Much like the steelbook bundle for the original Pokemon Sun and Moon, the Ultra Sun and Ultra Moon bundle will include physical copies of each game. The steelbook features new forms of the Sun and Moon legendary Pokemon Solgaleo and Lunala. You can see images of the steelbook below.
Amazon Canada has listed the special edition steelbook duel pack for $100 CAD and Amazon US has the special edition listed for $80. The has been no confirmation of EU version of the Steelbook Duel Pack for the EU yet.