I can't attest to whether or not it's a growing trend since it's really difficult to know what really went on behind closed doors in past generations, but I do believe that the views around "macho" and "feminine" things to do are changing and equalizing a bit. Not long ago my husband and I got into a discussion on this very topic -- as he was washing dishes and tending dinner on the stove, and I was happily assembling our newest purchase from Home Depot. He made a statement that I wholeheartedly agree with -- the only job that is decidedly "woman's work" is carrying and giving birth to babies, and the only "man's work" is planting the seed that makes them. All else is up for grabs by either gender. Obviously, leaving aside discussion of the growing abilities of current science to change even those definites.
In my own home, all I can say is that there are certainly no true gender roles. My husband and I are from different generations, and though his tried to drill the "man of the house" mentality into his head and he was raised in a very patriarchal Russian family, he is completely comfortable with taking on the chores that traditionally have been allotted to women. He is an excellent chef, he can do housework quickly and efficiently, and he's wonderful with the kids. On the flip side, domestic responsibilities are generally not my strong point, though I have the skills and imagination to enable me to make a comfortable enough living for us while also staying home full time. I am the only one who brings in an income, and he's fine with that. We each take on the responsibilities that best play to our strengths, and in that way are also able to compensate for each other's weaknesses.
Though we do not hold to traditional gender roles, there are some basics of love and respect and how they manifest themselves that are probably very traditional. Throughout the ages men have thought and responded one way, and women quite another. We take equal parts in decision-making, though I try to give him the lead and make suggestions to help him reach the conclusion that will best suit our family. That said, my husband is also an assertive natural-born leader, and that's what comes naturally to him; it would not surprise me if this varies drastically from one household to another.