The glittering event will be held on 19 October at Grosvenor House on London's Park Lane and will see the best work of the past year recognised and rewarded.
New categories include Best Use of Social Media and Merger, Acquisition, Flotation or Rights Issue PR.
These join well-established awards such as Consultancy of the Year, Private Sector Department of the Year, Communicator of the Year and PR Professional of the Year.
Last year, Edelman scooped the Consultancy of the Year award and Westminster City Council took the Public Sector Department of the Year gong. Private Sector Department of the Year was won by RSA.