Following oral arguments the SCOTUS Blog's comment was that they didn't have 5 votes on the court that wanted to uphold SSM, and Kennedy wanted to dismiss the case by ruling that SSM supporters didn't have standing to file the case. If the court went that way then Prop 8 would stand, and they felt that was a likely outcome. But YMMV.
What will the Court do with Proposition 8? Today’s oral argument in Plain English : SCOTUSblog
Having said that, people have forgotten how silly the whole idea of SSM is.
The idea that SSM is somehow a civil rights issue is a distortion of the concept of civil rights. And silly. What's next? Are they going to claim a civil right to have sex with dogs? What is there to keep them from doing that in today's America?
The idea that SSM is about freedom is a corruption of the concept of freedom. And silly. What's next? The "freedom" to marry prepubescent children? The "freedom" to be married to 9 wives at the same time? What is there to keep them from doing those things in today's America?
The United States is becoming increasingly degenerate. People confuse freedom with libertinism and confuse civil rights with a right to fulfill all perverted and twisted desires. Increasingly people have criticized and undermined all the worthy traditions and values that were formerly celebrated and upheld. People should read the Marquis de Sade to see where that's likely to go.