This paper provides a description and rationale for the Evaluation Procedure taking place at the Workshop. The procedure has three goals. First, setting a precedent of providing conference participants with a more candid and thorough picture of the quality of current TTS systems than is usually available in the form of prepared conference demonstrations. Second, providing results that will be informative for TTS systems developers. Third, stimulating a discussion and contributing to a consensus building process on text-to-speech synthesis evaluation.