The next World Congress of the Econometric Society will take place in the summer of 2015 at a location to be decided by the Executive Committee in August 2012. Expressions of interest by potential local organizers are being solicited. The proposed venue should have a large auditorium for the plenary lectures(for about 1,000 participants), 3-4 large rooms for the parallel invited lectures (for about 300 participants each), and 30-32 smaller rooms for the parallel contributed sessions. For more information you may visit the website http://www.eswc2010.com/ of the 2010 World Congress and/or write to firstname.lastname@example.org. Initial proposals should be received by April 15, 2012.