Otherwise known as Visual Studio 11 during the beta period, you can now download the release candidate from Microsoft. The primary complaint during the beta was that the new light and dark themes had no color, they were purely monochrome style themes. Microsoft did listen, and they did add some color to the interface.
You can also see that they did change the all-caps titles on the tool windows, however they did seem to just move the all-caps to the main application menu, which most people still disagree with. Overall though its still the same great development environment, so download it and give a good run through.
It also appears that some of the changes didn’t make it into RC, specifically for the dark theme.