Well, sometime between tomorrow (Thurs.) and Monday we will know.
I'm more than a little apprehensive myself. There's any number of ways this could go sideways on us. For one thing Justice Kennedy has hinted before ( in Lawrence vs. Texas ?) that he wasn't comfortable ruling on the marriage question.
For another, in past cases Kennedy has shied away from explicitly holding that gays as a class are entitled to the same level of court protection ("heightened scrutiny") that racial cases, for instance, require. On the other hand, he opinions in those same cases have applied what amounts to a de facto heightened scrutiny standard, so who knows. At any rate, I don't see how he's going to rule positively for us on the marriage cases w/o admitting that he's using that legal standard.
Last, finding a national constitutional requirement that all states recognize same sex marriages is a big ask from the court, pretty much on the same level as Roe vs. Wade and the Court is well aware of all the grief they let themselves in on that one.
Cross your fingers on this one.