According to a report by Engadget, Microsoft is all set to launch the first public beta of Internet Explorer 9 to the world on September 15 in San Francisco.

Early builds of IE9 have been floating around the internet for a while, but the most up-to-date beta builds and builds that are probably considered too buggy for public consumption, have been reserved only for Microsoft beta testers.

The beta that is apparently due to launch into the wild on September 15 will probably be pretty close to what you can expect to see in the final version. At this stage of the game we have no details on when the final version will be ready.