Laura Wattenberg at The Baby Name Wizard site recently did a post about how Old Testament names are becoming quite popular in the U.S. The post primarily focused on why they are more popular (in general, note the last paragraph in the post) in the U.S. than Europe. I thought of something else related to that, and it ties into the changing generations. Before I talk about the OT names, I'm going to first talk about another group of names that is quite popular in the U.S. right now: Irish names.
A century ago, being Irish in the U.S. was less than desirable. However, around the time of the last Fourth/First Turnings (1920s-1960s) the Irish became accepted (and as time went on it became "cool" to be "Irish" even if you weren't). This explains the rise in names of Irish origin since then, and before the Silent Generation or so it was much less common for a baby to be given an Irish name.
Fast forward half a saeculum to the last Second/Third Turnings (1960s-2000s decades), and another name taboo is released (and has likewise subsequently became more popular): Old Testament names. For the past several generations before that such names tended to have too strong of a Jewish connotation for a lot of people (even though as Wattenberg mentioned in her post there had been a strong history of their use prior to that era in the U.S.). However the taboo of being Jewish was lifted around the last 2T or so, and thus since Generation X or so OT names have been on the rise. Now there were a few exceptions here and there that were popular during the Jew-taboo era (such as Ruth in the early part of the 20th century and Deborah in the middle part of that century), but what I'm saying is of course a generalization.
If you're familiar with the S&H theory, you know that Fourth Turnings center around reshaping the secular world, and Second Turnings around reshaping the spiritual world. This may explain the half-saeculum difference in the release of the Irish and Jewish taboos: The former centers around an ethnic (i.e. secular) group while the latter centers around a religious (i.e. spiritual) group.
So, what can we expect to change in this regard in this 4T (and the next 1T)? According to my theory in the last paragraph, it will be something secular (and not religious). I have a hypothesis on what it will be (and I did some blog posts about it a few months ago): The taboo on "softer males" (and thus "softer" or unisex names on boys will not be as avoided as they were in recent decades).