As both Bill and the Zend Developer Zone announce, the latest version of the FastCGI extension for IIS has been released:

Microsoft is eager to announce availability of the Go Live release of Microsoft FastCGI Extension for IIS 5.1/6.0 (FastCGI Extension) as a free download from the IIS community site, www.iis.net. The Go Live release is the last step in the Microsoft beta process and represents thehighest level of quality and reliability. For the first time, customers have a license that permits them to deploy the FastCGI Extension on their production Internet Information Services 6.0 (IIS 6) Web servers.

Bill answers a few key questions - like "is it ready for production?" and "where do I get it?" while the Zend Developer Zone gives more of the background on the path the extension has taken, how it's supported and what sort of future Microsoft has planned for it.