The December SAT essay prompts (from December 1, 2012) are now publicly available.
A paraphrase of the four essay prompts follows:
Sometimes leaders become successful by treating other people poorly, which is not good. Prompt: Is it important to consider how nice or polite leaders are?Many people stubbornly cling to their beliefs. Prompt: Is it good to strongly believe something?Everybody makes mistakes. Prompt: Should we be forgiving of people's mistakes?Everything