Scopus is the world’s largest abstract and citation database of peer reviewed literature. These new metrics will provide the scholarly community with free to access metrics on the citation performance of over 22,000 journals published by more than 5000 +publishers. The data will help inform authors on where to publish and will help them gain … "a richer understanding of the academic impact of their work".
Not only will the metrics help authors, but they should help librarians in reaching purchasing decisions and will provide a range of indicators to help publishers explore the performance of their journals.
Source: Elsevier via Knowledgespeak.