KNACK PS4 - Knack II in Japan. The title will be Knack: The Two Heroes and the Ancient Army. The box art will also be different, focusing more on the game's characters.
Why Hasn't Sony Announced Knack 3 Yet?
Knack II review for PS4 - Gaming Age
Knack™
Knack PS4 Review: Sure, It's a Kids' Game... if You Hate Kids | USgamer
Knack (video game) - Wikipedia
Knack (PS4) NEW | eBay
PS4 Exclusive Knack II Gets New Screenshots Showing Skill Tree, Ice and Iron Powers