How can one be conclusive about something which has not yet happened? How can one come to conclusions about something as insubstantial as the medium-term future? Nonetheless, some common themes have emerged from the Spring Colloquium, as well as from earlier work in the "Teaching 2020" project, which seem to indicate a possible context for the education and training of the teachers of the future. If they compel attention, they offer a substantial and challenging agenda. This article discusses possible future developments in the geo-political, sociological and cultural, scientific and technological, and educational fields that may have consequences for the training and education of teachers. (Contains 5 endnotes.)