Queen Sonja confessed that she suffered two miscarriages.
"It's not pleasant, that's clear. I've already had two miscarriages, and the most intimate things were made public. (...) The only time it happened aboard the Kongeskipet outside Hankø, so I was hoisted over the side of the ship and admitted to Fredrikstad hospital. It was so cruel because there were so many strangers standing there and welcoming," says Queen Sonja.
Especially given that the source is S&H, hasn't this been more or less known already for quite some time?
The fact Harald and Sonja had difficulty having children after having had to wait so long to get married is why ML and Haakon are viewed as a bit indulged to begin with.
It‘s very sad but nothing new. It is known for decades, the last time she spoke about it at length was during a TV documentary released in January 2016, see here or here for quotes in English.
As someone who has had miscarriages too, I am very glad that the Queen speaks out on it. It is so often pushed away, but talking about it is really the best way to deal with it.