The main change for 2014 is the addition of new terms for different groups of people. So, for example, if you were interested in searching for articles written about people from Jamaica, you could search on the index term ‘Jamaican’. They also have some regional terms too, like ‘EU Citizen’ or ‘North African’. They have also added terms for people who follow a specific religion, so if you were interested in papers written about Evangelical Christians, you could search on the index term ‘Evangelicalist’
Full details of the update can be found on the Elsevier Website.