OCLC has made these changes.
Fixed Field coding of GPub Government Publication
http://www.oclc.org/bibformats/en/fixedfield/gpub.shtm changed significantly. Now it is important to consider the “*Status of the governmental entity.* Choose a code based on the status of the jurisdiction at the time of publication, e.g., for Texas government publications, use code /f/ for the period 1836-1845 and code /s/ for the period 1845-“
Field 040 Cataloging Source
http://www.oclc.org/bibformats/en/0xx/040.shtm Definition now includes this statement: “Historically in WorldCat the absence of subfield ‡b has indicated that English is the language of cataloging. OCLC now recommends always coding this element.”