Visual Studio 2012 and .NET 4.5 have launched. The live keynote videos are over, but will be available for on-demand viewing tomorrow on http://www.visualstudiolaunch.com/vs2012vle/Home

You can read about Visual Studio Express 2012 over on the VS team's blog http://blogs.msdn.com/b/visualstudio/archive/2012/09/12/visual-studio-express-2012-for-windows-desktop-is-here.aspx

And you can download Express or trial versions of the other editions from http://www.microsoft.com/visualstudio/eng/downloads