I'm guessing this will be their last summer in this enclosure, if work starts on the tiger exhibit next year. The masterplan shows an enclosure for pygmy hippo where the entrance is now, however I think this was based on the idea that a new entrance complex would be built behind the shop, whereas in actual fact only a zoo exit has been created by the shop as part of the penguin beach development.
I imagine they will be moved to the tapir house once work starts on the above enclosure and the Casson.