Available as part of the existing Bundles for R17 to R20, as well as individually for R20 users.
The Sculpt Pack comes with some additional features for the Sculpting system in Cinema 4D Studio and BodyPaint 3D editions.
It currently has three features.
A Sculpt Projection Brush: This allows you to push or pull sculpting onto other objects
Sculpt Animator: Allow you to easily animate the strength of sculpting layers that are on the same level.
Duplicate Sculpt Layer command: If you have a sculpt layer selected and you run this command, it will duplicate the currently selected sculpt layer.
For further information be sure to check out the official help documentation.