In case you have not yet heard, we will be offering a NEW civil solution in July. AutoCAD Civil will be targeted for users that do not do Geospatial analysis, Hydraulic and Hydrology analysis, and do not need Land Desktop Companion. The title of this post gets you to the combined AutoCAD Civil and AutoCAD Civil 3D page.
The Features and Specifications page provides more details.
I have heard people refer to AutoCAD Civil as AutoCAD Civil 3D's lil brother.
Some groups will get everything they need for certain users with AutoCAD Civil, and at a lower price.
Be Better...Learn Something New!