Did I Miss This US Supreme Court Decision?

In an Op/Ed piece today in the San Francisco Chronicle by the German Minister of Justice, Brigitte Zypries:

Germany is following with great interest the Californian debate on the U.S. Supreme Court's recent judgment and the impending referendum on same-sex marriage.

and

And this is how I understand the U.S. Supreme Court ruling: The court affirmed that the Constitution allows prohibition of same-sex marriages, but a majority of the court also said lawmakers have the power to provide same-sex couples with rights otherwise afforded only to spouses - for example, in the fields of medical insurance and inheritance law.