Dec 18, 2017 – Autodesk releases new versions of many AutoCAD Civil 3D 2018 and AutoCAD Civil 3D 2017 Country Kits
The AutoCAD Civil 3D Country Kits are available from the Autodesk Knowledge Network Civil 3D download pages.
AutoCAD Civil 3D Country Kits Updates
Most, but not all, AutoCAD Civil 3D Country Kits for both Civil 3D 2017 and Civil 3D 2018 were updated.
Check the individual Civil 3D Country Kit download page for details and specifics and release dates.