There's an extension[1] that does this. I'm now tempted to install it, at least until I find a way to back out the SCREAMING new menus. With that said, I've been using the beta for a couple months and it seems both snappier and more stable than 2010.
[1] http://visualstudiogallery.msdn.microsoft.com/bdbcffca-32a6-...
Turn off the ALL CAPS menus with this registry value: http://www.richard-banks.org/2012/06/how-to-prevent-visual-s...
I installed the beta, which had all-caps in some of the headers. Initially I was annoyed that Microsoft has to spend so much time on changing the look of every edition of visual studio, but when I ran it, I actually liked the grey colour and the ALL CAPS.
I'm surprised Microsoft hasn't made their menu titles disappear until you move the mouse near them (like Mac OS X's X-+ window buttons). That sounds like the "hide the UI so it looks good but is less usable" style Microsoft likes.