Trying to guess the outcome of SCOTUS deliberations is an occupation which employs a fair number of lawyer-journalists. Right now some such are predicting that the Court will decide that the folks defending California's Proposition 8 don't have "standing" to bring the case before the Supremes.
I'm no attorney, but I think this means the people bringing suit cannot show that they were in any way damaged by the U.S. appellate court's decision finding the constitutional amendment unconstitutional.
See a New York Times article on the arguments. Perhaps this Washington Post article covers more ground.
