Sex and the "how old is she?" woman

I am enjoying the luxury of a day off, which means I can read ALL of the New York Times, even those promotional ads for what we will see in tomorrow's paper. The NYT says Friday we can expect an article on "sex and the older woman" about "a flurry of new films and books" that "may be signalling a big shift in attitudes toward older woman's sexuality." I will be interested to see how the article defines "old" -- are we talking more parts for 40-somethings or 60-somethings? Sometimes the Times posts lifestyle/entertainment articles late in day before publication. If I see it, I'll post link.