Is the page of Proposition 8 in California merely a stepping stone toward greater discrimination?

Given that Proposition 8 ped 52.5% to 47.5% (I believe..??) in California, is this merely the beginning of a larger campaign by religious groups to enact more substantially discriminatory measures toward s within that state? Are ual families with adopted children at risk of losing those children? Are non-Christians' rights at greater risk because of the page of that amendment, given that it was largely supported on religious grounds?