The pace of change remains glacial. Women continue to earn less than men in all ten fields monitored by the US Bureau of Labor Statistics, as of July 2015, including management, professional, service and farming sectors.
I think the Complete Story of the Gender Pay Gap is still to be written. Claudia Goldin's knowledge and experience in this field is amazing. It is part of the story but I think there is more to be added. We probably will not know everything about the gender pay gap until we succeed at closing it.
In 30 years, women are settled in everywhere from the CEO's office to the Supreme Court to the battlefield to earth orbit. The term "first woman" that signified every breakthrough has lost its news value. There is just not that much of note to break through these days. With one exception.