Those called upon to forecast future trends in professional development are well-advised to remember the biblical observation, "There is nothing new under the sun." In fact, a case could be made that the greatest advances in professional development will come not from identifying new strategies or processes, but rather from applying what people already know to be best practice. The most pressing issue confronting educators is not a lack of knowledge but a lack of implementation, and a key to improving schools is taking purposeful steps to close this knowing-doing gap. It has also been argued, however, that a group must be able to envision a better future before it can take steps to create that future. This article presents observations to help others imagine a better future--what might be in the domain of professional development for educators.