With approximately a week left until Microsoft will debut the public Beta of its revolutionary Internet Explorer 9 browser, new leaks allow users to get a better idea of what the company has in store for them come September 15th, 2010. The video embedded at the bottom of this article is reportedly offering a sneak peek at the Beta development milestone of Internet Explorer 9, which is scheduled for launch next week at the “Beauty of the Web” event in San Francisco.

The source of the video claims that it is in the possession of the IE9 Beta installer, and while it has not leaked the actual bits, it did demo the new browser, as users can see below.

Fact is that with the official Internet Explorer 9 Beta just eight days away, it’s probable that the IE team has already wrapped up at least pre-Beta Builds, if not the actual release that will be delivered to the public.

Recently, Microsoft Russia managed to leak details of the upcoming IE9 Beta, as well as what appeared to be a screenshot of the browser.

The new IE9 graphical user interface can also be seen in the new video provided by IEBest, and that’s pretty much it, as far as the new leaked content on the evolution of Internet Explorer goes.

Of course, for those counting the seconds to the IE9 Beta release, the actual build from the software giant is just around the corner.

Microsoft has even kicked off an advertising campaign for Internet Explorer 9, first spotted by Long Zheng.

The new IE9 Beta banner ads are now live on at least one website, but are most probably being served from additional sources, advertising the imminent release of the Build.

In the context of the new advertising campaign, the message from Microsoft could not be clearer.

While the four Platform Preview releases of IE9 were designed for a developer audience, IE9 Beta will be a full browser ready for the general public.

Of course, users should keep in mind that IE9 will continue to be in development even after the Beta Build lands, but they should by all means download the development milestone and start testing it.

Internet Explorer 9 (IE9) Platform Preview 4 is available for download here.