ESA has purchased a second Sentinel-2

The European Space Agency has purchased a second Sentinel-2 for Europe's Global Monitoring for Environment and Security (GMES) network. Worth $140 million, the spacecraft will provide continuity with Sentinel -2A, ordered in 2008. The two 1.1 metric - ton units - to be launched in 2013 and 2015, respectively, to provide imagery of the Earth's land mass - are each designed to operate for a minimum 7.25 years, with a further five-year extension if required, ensuring a steady stream of land monitoring data for at least 15 years. Long term provision of data is a major concern for GMES, which will be entrusting with providing operational information of use to government organizations, companies and other entities. 

Source: ESA, Aviation Week