Microsoft today released the Windows Internet Explorer Platform Preview to the public. The release is meant to demonstrate the capabilities of Internet Explorer 9 to Web developers while at the same time providing feedback to the IE9 team. Microsoft says it is committed to updating the Platform Preview to keep a more effective rhythm for discussion, and it will be updated every eight weeks or so. Microsoft will share feedback with standards-setting bodies in addition to using it for internal development.

The Platform Preview is a minimal wrapper: it's not a full-fledged browser. It has no tabs. It has no address bar. It has no back button. So what is included? Everything that Web developers need to see: the rendering engine, of course, as well as the new JavaScript engine, hardware acceleration features, and the developer tools. The IE9 team told Ars that each update will use one of the latest internal engineering builds, at which point the feedback loop will start again.