What I should mention first about this new MP is that it is not standalone functional MP. It is actually supplemental MP for Microsoft SharePoint 2010 Products Management Pack for System Center Operations Manager 2007. So you have to import the old MP for SharePoint first and than import the new one. What actually the new MP does is to add task that will configure SharePoint 2010 monitoring on SCOM 2012. You can all steps in the 4 pages manual that comes with the MP. The manual and the management pack can be found here.