Autodesk just released Productivity Pack 3 for Civil 3D 2016. Below is taken from the README file…
Key Features of this Productivity Pack
Autodesk® AutoCAD® Civil 3D® 2016 Productivity Pack 3 consists of the following features:
1. Traverse Editor – Create points, lines, and curves representing traverse legs and sideshots using a broad set of COGO input and editing tools. The traverse can be used to generate polylines, COGO points, and a .TRV2 traverse file. Note that this new tool provides significant improvements over the COGO Editor that was included in AutoCAD Civil 3D 2016 Productivity Pack 1.
2. Traverse Adjustment – Perform traverse adjustment and generate reports using Compass, Transit, Crandall, and Grant Line adjustment methods. Update COGO points and traverse geometry within the drawing.
3. Subassemblies – A new library of subassemblies is included that you can integrate into your projects. All of this content was created in Autodesk Subassembly Composer and can be edited and expanded to meet your individual or organizational needs. Not that there are separate metric and imperial libraries and detailed Help that you can access to learn about the behavior of each subassembly.
You can learn more about Autodesk® AutoCAD® Civil 3D® 2016 Productivity Pack 3 via the online Help.