In an October 7 post, Frontier revealed Planet Zoo 2's photography mode and a feature from WWF UK about it. The message states that the game will be released on October 13th.
Photo Mode is dedicated to photographing animals in the game zoo. This is a preview of a feature for a future release, so until release it cannot be taken as confirmation that the full game will be available today. You must check the terms and conditions of the Pre-Purchase Bonus Pack separately at your local store. Details of mode control and shooting examples are available via the link in the official publication.