They've been together for so long now, many people probably assumed they were anyway.
But, as Magdalena Kožená has revealed for the first time to the Berliner Zeitung, she only tied the knot formally with Simon Rattle last year, a fact they've deliberately kept hidden up till now *. (After four years of press intrusion into their private lives, it's hard to blame them).
And there may be further congratulations in order. Speculation that she may be pregnant with the couple's third child is given weight by recently-announced cancellations in the new year.
* Though a bit of digging reveals a profile in Die Welt last November drops in casually "by the way, they got married three weeks ago" - a revelation that doesn't seem to have been followed up anywhere else.