Region Chaining 
Mastercam's 2D Dynamic Milling is now easier to use than ever with the introduction of Region Chaining. You can now explicitly define the area for a 2D dynamic milling toolpath by simply selecting the face to be machined and face (including non-planer faces) to be avoided. Mastercam treats the selections (even on open pockets) as complete machining chains.
Intersecting and Trimming Solid Edges
Mastercam will automatically recognize intersections between wireframe geometry and solid edges.
Enhanced Solid Trim to Surface
New options give you greater control over solid / surface trim results.
Solid history removal
Mastercam lets you strip the list of operations or features from a solid model, leaving it as a "brick" to prevent changes and protect your model.
Transform (Xform) fit
Mastercam can "nest: geometry along a vector. This can be helpful when fitting parts between clamps and fixtures.
64-bit Support
Mastercam is now available as a 64-bit application, which lets you take full advantage of your 64-bit hardware and operating systems.