In Inventor 2011, Autodesk added some fancy visual styles (see “Visual Styles In Inventor 2011“). In Inventor 2012, they have added ray tracing directly in the graphics window itself, which is made available during regular modeling. Watch this video I took during one of Rob Cohee’s demos. Rob now refers to Inventor 2012 as HD Sexy CAD. 😉
Click the maximize button (bottom right) to view the video in HD.