Upgrading to Cocos2D-x 2.2 to 3.0 Alpha

Hi can anyone tell me what needs to be done if anything to bring my game from version 2.2 to version 3.0 Alpha?

there is some changes in 3.0. but change project to it is easy. u can see http://www.cocos2d-x.org/wiki/Release_Notes_for_Cocos2d-x_v300