Per the AutoCAD C3D Release Comparison Matrix, it appears we can label between 2 points in 2013!
But in typical Autodesk fashion, they forgot that we ALSO need this functionality for CURVES!!!!!!! Come on Nick Z and Peter F... Why must every neat new feature have yet another caveat that ruins its appeal?
As, I have been saying for many years, Civil 3D is written by Engineers and for Engineers. Autodesk, please listen to and focus more on Surveyor's needs, a good engineering design starts out with a good survey.