The Club Penguin App (formerly called My Penguin) has updated to its most recent version: version 1.6.18 for all mobile and tablet devices that the application is available on.
Club Penguin has updated it for the 2016 Zootopia Party that was launched May 18, 2016. The system requirements for this app are iOS 7 or later and Android 4.0.3 or later.
The update includes the Zootopia Party 2016, on from now until July 6.
Here is the icon for the app. It is the face of Nick Wilde, the fox from Zootopia, 'penguin-ified'.
Here is the description from the iTunes store:
"Join Club Penguin’s Zootopia Party May 18-July 6! Everyone can check out Savanna Central at the Snow Forts, and members can get costumes inspired by Disney’s hit movie Zootopia."