Home News A look at the new Steamboat Willie Tsum Tsum Collection released today... News A look at the new Steamboat Willie Tsum Tsum Collection released today at the D23 Expo By Disney Tsum Tsum - August 16, 2015 501 0 Facebook Twitter Pinterest WhatsApp It’s the final day of the D23 Expo and the Disney Store has released the new Steamboat Willie Tsum Tsum collection. Below are photos of the great new Tsum Tsum collection.