The evolution of cybernetics (from N. Wiener to the present day) is briefly considered. A new development stage of cybernetics (the so-called cybernetics 2.0) is discussed as a science on general regularities of systems organization and control. The author substantiates the topicality of elaborating a new branch of cybernetics, i.e., Organization theory (O3) which studies an organization as a property, process and system.