On campus currently, I see a lot more couples with non-white males in them (many of them with white girls) than I did several years ago (they were essentially non-existent then). I also saw quite a few of them when I visited a cousin's high school.
I suppose you'd need some actual age data, but it seems like the preference is either equalizing, or beginning to shift in another direction.
From being online, I've also noticed that a HUGE amount of young European white girls are very into Asian guys, mostly due to the Korea/Japan cultural popularity wave. This could be more of a location/cultural thing than a temporal one though.
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Always have been that way you just have been reading too many Okcupid articles.1