Welcome as it was, that decision by the U.S. 9th Circuit Court of Appeals was a narrow one that at this point fits only the particular circumstances of Proposition 8. A three-judge panel decided that the initiative was unconstitutionally discriminatory because gay and lesbian couples in California had, for a brief period, enjoyed the equal right to marry.
In other words, if the Supreme Court declines to review the 9th Circuit's ruling and it stands as it is, bans on same-sex marriage in other states will remain in place. [LA Times]
Marriage equality joins reproductive rights and voter ID laws in the "it's 2012 HOW ARE WE STILL TALKING ABOUT THIS" category. We've got some really scary climate stuff to deal with, so let's quit pretending marriage equality isn't going to happen. C'mon Supremes.