The 39th ACM Symposium on Theory of Computing (STOC 2007), sponsored by the ACM Special Interest Group on Algorithms and Computation Theory (SIGACT), will be held in San Diego, CA, June 11 to 13, 2007, as part of the FCRC. Paper submission deadline is November 20, 2006. The call for papers is available at http://research.microsoft.com/research/theory/feige/homepagefiles/stoc07.htm Uri Feige