Russian website winreview.ru has gotten hold of a more recent build of IE9 that is expected to land as the public Release Candidate on January 28.
This build, numbered 9.00.8073.6010 (WIN7_IE9_Partner.110113-2300), features notable UI tweaks, sharper edges on the tabs, and more focus on the webpage by removing the thick border under the tabs. Tabs can also be moved under the address bar and the most frequently visited sites page has also seen an overhaul. Also added to the new build is the new "Do Not Track feature." more on that here.
IE9 Public Beta
IE9 Release Candidate
Images credit: Winreview.ru