The Supreme Court of California has agreed to hear arguments regarding Proposition 8 on the following issues:
(1) Is Proposition 8 invalid because it constitutes a revision of, rather than an amendment to, the California Constitution?
(2) Does Proposition 8 violate the separation-of-powers doctrine under the California Constitution?
(3) If Proposition 8 is not unconstitutional, what is its effect, if any, on the marriages of same-sex couples performed before the adoption of Proposition 8?
The Supreme Court denied a motion to stay the enforcement of Proposition 8 while the case is pending.
All briefs in the matter must be filed by January, 2009, and it is anticipated that arguments could be heard as early as March, 2009.
You can read the full text here.
You can read everything that's been filed with the Supreme Court regarding Proposition 8 here.