May 18th, 2011· Native 64-bit edition, support for ASP.NET 4, accurate control over FastCGI processes
January 22nd, 2009· Support for XSSI and on-the-fly compression.
September 19th, 2007· Support for secure SSL connections (HTTPS), integrated SSL certificates management interface, updated documentation
January 13th, 2007· Support for Windows Vista, support for URL rewriting, support for remote FastCGI servers, support for Ruby on Rails, updated documentation
June 1st, 2006· Support for FastCGI over named pipes, Improved native ASP.NET support, custom HTTP headers, updated documentation