http://wccftech.com/knack-2-demo-available-european-psn/

Sony Interactive Entertainment has released the playable Knack 2 demo for PlayStation 4: the trial version is now available for free download from the PlayStation Store and integrates support for various languages.

Knack 2 has a demo on the European PlayStation Store. The size of the Knack 2 demo is around 2.6GB and includes the monastery level and local cooperative option.