From the Supreme Court of California website:
The California Supreme Court has announced that it will issue an opinion in three cases challenging the constitutionality of Proposition 8 at 10 a.m. on Tuesday, May 26, 2009. (Strauss v. Horton, S168047; Tyler v. State of California, S168066; City and County of San Francisco v. Horton, S168078.) Tuesday (5/26/09) at 10 A.M. The opinion will be available on the California Courts Web site.
For those unaware, California voters passed Proposition 8 last November. It changed the CA constitution to eliminate the right of same-sex couples to “marry” in California. Furthermore, it provided that “only marriage between a man and a woman is valid or recognized in California”.