Currently, it would seem that the law will go into effect on January 1st because the decision of judge Kimberly Mueller follows the one of judge William B. Schubb (Shubb being the judge who blocked the law).
According to The Advocate, Schubb's decision exempted three therapists from adhering to the law, while Mueller's decision ensures that the law goes into effect starting January 1, 2013 for all other practitioners.
Immediately, the executive director of Equality California John O'Conor, was delighted by this decision: "This law will put a stop to one of the most dangerous and discredited forms of discrimination against LGBT youth," he said in a statement.
"We are extremely pleased that the court’s decision will allow the law to go into effect on January 1, 2013 as planned, and young people in this state will no longer have to fear that they can be subjected to these dangerous practices by licensed therapists. Every day that licensed therapists are permitted to engage in these dangerous and discredited practices is another day that our youth are placed at risk of depression, substance abuse, and attempted suicide. The state has a duty to protect minors from conduct by licensed health care professionals that is both harmful and offers no benefit to health."