I won’t attempt to list all the new features for Navisworks 2011, but here are a couple items I hope interest you:

The Ribbon interface and Quick Access toolbar have now been added to match the existing product line for most all Autodesk software.

Although the Options Editor will allow the user to choose a classic mode if desired.

Personally, I’m liking how the Sectioning toolset has been enhanced, with direct manipulation tools for dragging, rotating, and scaling.  These should add to the production workflow.

And…if you’re into Gantt Charts….