Board Thread:News and Events/@comment-26005122-20170801071715

Every month, a specific selection of Tsums will be made available in the Premium Boxes, as opposed to offering every Tsum currently available. This will increase your chances of getting a specific Tsum you want, instead of a really low random chance among all the Premium Tsums.

The following list corresponds with the International version.

The Tsums available for the month of August are: Any Tsum Tsum not listed will not appear in the Premium Boxes during the month of August. The change likely implemented to help people have a better chance of increasing the skill level of a particular Tsum they want. 
 * Nemo
 * Dory
 * Lumiere
 * Queen of Hearts
 * King Triton
 * Evil Queen
 * Simba
 * Nala
 * Cinderella
 * Snow White
 * Princess Aurora
 * Clarice
 * Nick Wilde
 * Judy Hopps
 * Pinocchio
 * Aladdin
 * Jasmine
 * Lightning McQueen
 * Randall
 * Surprise Elsa
 * Birthday Anna
 * Baymax
 * Belle
 * Beast
 * Rapunzel
 * Jessie
 * Lotso
 * Pete
 * Ariel
 * Sebastian
 * Anna
 * Olaf
 * Sulley
 * Mike
 * Woody
 * Maleficent
 * Bambi
 * Thumper
 * Miss Bunny
 * Stitch
 * Angel
 * Little Oyster
 * Alice
 * White Rabbit
 * Pascal
 * Marie