Neither, it's an article which has been up on the Western Standard sikte for two weeks for subscribers, but just became available for everyone yesterday.
I think Steyn has pre-written some articles for his magazine publishers such as The Western Standard and National Review which dont have to be so topical about current news.
I think quidnunc is right. I just got the digital edition of National Review, and his regular "happy warrior" column is in there, but you can tell it was written before he went on hiatus.
Is this hiatus just a well earned vacation? I'm a little concerned that his site say "family and personal reasons". IN my experience that's never good, and does seem to be more than a vacation. Hopefully Mark and his family are OK.