I think this year it would be twice a week.
I see schemes training bodyparts twice a week, three times in two weeks more often. And personally I think it's just like fashion. These kind of things come and go.
You will make gains in the first couple of weeks, after that it wil stop, and thats normal. You have to switch your routine ever couple of months, so you can make some progress on a certain kind of front.
Training your muscles ones a week is a proven concept for decades, so don't start giving up if the results aren't visible at once and start changing just for the change.