I am using PyMOL 1.7 open source version in Ubuntu 14.04. 
I wanted to try a new setting  pdb_conect_nodup in pymol 1.7. 
It is listed as new features available for both "Open Source and Incentive" at:

when I set it to on, I got:

"Setting-Warning: not supported in open-source version of PyMOL"

though the setting could be successfully set (get pdb_conect_nodup). 

After saving a test PDB files, I still see duplicate CONECT lines in the PDB file generated by PyMOL. So I guess the feature is indeed missing in open source version. 

Should the feature be made available to open source version users?