Used alongside the new construction surfaces, this will give you a very powerful tool for creating sculpted forms, which cannot even be attempted using solid modelling alone. Hole and threading definition has been greatly enhanced with the addition of a large standard library of both external and internal thread types and of course you can add your own custom thread types to the list in the Excel-based spreadsheet that controls their functions. Any threads added to the parts are displayed on screen with a small bitmap, which shows the thread in shaded mode - it doesn't serve much function does look rather cool. The last release saw the addition of derived parts, which allowed you to use existing parts as the basis for new ones. This has been extended to allow you to create a new part based on an assembly rather than just parts.
Some highlights are Boolean capabilities for use in mould cavity design, and weldment design.
The sheet metal functions in Inventor have been given a great deal more depth in this release. The simultaneous folded and unfolded design working process has been extended to include punched shapes across bends, flanges with setback, and ripped corners. Specific new features include the contour flange, which allows you to build up sheet metal parts by defining a chain on edges. Unfortunately the dimension would appear to be in Imperial measurements, but thankfully at least you can enter any units as long as they are followed by the appropriate unit notation. Standard features include dimples, rectangular embossing, swages, and countersunk holes.