While professional development (PD) has always been central to the teaching profession, increasingly traditional models of PD are out of step with contemporary ways of learning. Commiserate with the literature, we see the field moving along a continuum which reflects changes in what, how and when teachers learn. Following a brief sketch of the online teacher professional development (oTPD) field, we identify important considerations of emerging models of technology-mediated professional learning (TMPL). We posit the catalyst for the transformation of education, as envisioned by countless educational leaders, may lie in reimaging professional development as professional learning in a networked age. (Contains 2 tables, 1 figure and 2 footnotes.)