Some years ago, Chris Hoff asked why the OWASP Top 10 doesn't change. Yes, Appsec feels like Groundhog Day, but it's not because the people at OWASP are sitting on their hands. The OWASP Top 10 catalogs the top Web vulnerabilities that all applications face, and it's reviewed and updated on a regular basis. But Hoff is right: It mostly does not change.
To refresh your memory, here is the OWASP Top 10 for 2010: