In case you are looking for the "SPSF Projects" context menu item and the project templates in order to create additional projectes in an existing solution using SPSF, this menu is currently missing in VS2012 (sometimes...)
This is a known bug, but somehow I don't get my head around it.
It works fine when I upgrade a project which used SPSF2010 but not with projects newly created with SPSF2012.
As a workaround for now, you can just add ordinary SP projects and run then
"Update project to current SPSF"
This will add the MSBuild targets to build the WSP and run the quality checks, along with the build dependency from the deployment project.
Any leads on solving this bug are higly appreciated!