Shark introduces a collection of quad mesh tools that enables an alternative conceptual design process based on mesh modeling. One of the advantages of mesh-based modeling is that models can be quickly pushed/pulled into complex shapes, whereas precision solids have some limits in what you can push/pull. The new mesh tools create quad based facets, which are suitable for subdivision as well as converting into precise solids.
Mesh Modeling with Subdivision Home Page - http://www.punchsoftware.com/p-108-shark-fx-v9.aspx