BLOOMFIELD, Conn.--(BUSINESS WIRE)--Cigna Corporation (NYSE:CI) confirmed today it received a highly conditional, non-binding proposal from Anthem, Inc. (NYSE: ANTM) on June 20, 2015. Cigna’s Board of Directors has carefully reviewed this proposal consistent with the company’s continued focus on maximizing shareholder value and creating differentiated value for its customers, clients and other stakeholders in a dynamic, rapidly-evolving healthcare environment. Based on a number of factors in th