As you can see from the pic attached, this is the official mascot of Expo 2015 that will be held in Milan for 6 months from next year.
Before deciding the Mascot, Expo 2015 received like 8000 proposals. And finally, the official mascot has been created, which is the Arcimboldo-style face and also eleven fruit and vegetable characters. This mascot is created by Disney Italia to promote the theme of the Expo 2015 about “Feeding the Planet, Energy for Life”
The theme covers how the world could maintain sustainability and biodiversity of food and nutrition plus sufficient access of clean water. The healthy lifestyles by keeping the quality of nutritious food for everyone worldwide will also be the issues brought up in the Expo 2015.
The mascot might have been chosen as fruits and vegetables are the symbols that are very well-known for supporting a healthy body in a person with sufficient nutrition and vitamins.
Official news can be found at http://en.expo2015.org/press-area/press-releases/expo-milano-2015-mascot