A German court has decided that a pre-existing marriage does not have to be dissolved if one of the spouses in said marriage changes their legal sex.
In the UK, that’s exactly what has to happen, & if the couple wants to remain married, they can then have a civil union (just as Jan Morris & her wife have just done).
In the US, of course, it’s more a loophole because marriage is a contract, & contract law is such that as long as the contract is legal at the time it’s written, it continues to be unless otherwise contested.
But as far as I know, this is the first ruling to acknowledge that some transsexuals are already married when they transition, that they choose to remain married after transition, and that their marriage is legally a same-sex marriage after the fact.
It’s good news.