Microsoft Russia leaked a video of the upcoming IE9 Beta, as well as a screenshot of the browser. The new IE9 GUI 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 IE goes.
Microsoft has even kicked off an advertising campaign for IE9. In the context of the new advertising campaign, the message from Microsoft couldn't be clearer.
IE9 Beta will be a full browser ready for the general public.