Where can I get the latest rules on IUPAC nomenclature of coordination complexes?
I have J D Lee book which is also assumed to have outdated rules.
In addition the correct reference to the current version of Nomenclature of Inorganic Chemistry – IUPAC Recommendations 2005 (Red Book) given in the answer by Buttonwood, you can find a short summary in the IUPAC Technical Report Brief guide to the nomenclature of inorganic chemistry. Pure Appl. Chem. 2015, 87(9–10), 1039–1049 as well as in the corresponding four-sided lift-out document, which is available as supplementary material.