Beside the below mentioned information, I have written an updated compatibility sheet for the avaialable combinations or Visual Studio / SQL Server and the BI templates which is published here.
We waited and hoped and now we finally have them. SQL Server BI project templates in Visual Studio 2012.
More Information about this can be found here: http://blogs.msdn.com/b/sqlrsteamblog/archive/2013/03/06/sql-server-data-tools-business-intelligence-for-visual-studio-2012-released-online.aspx
The direct download link is
Be aware of the following:
A big thanks to the team making this happen !