All the restaurants that are not operated by WDW, including CSR, take longer to negotiate their contract with Disney. For 2011, CSR did not get added until January 2011. I'm sure the case is the same for the 2012 version and CSR will not be added until late. The CSR restaurants are operated by the same company that runs the restaurants at the Mexican pavilion in Epcot.
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Visit this link to find answers to some of CSR's FAQ.