“…An editorial and virtual issue launched this new section and set out the intended scope. A subsequent virtual issue and accompanying editorial showcased examples of papers accepted for publication in the new Section A4 during its first two years. After further growth of the “A4: New Tools and Methods in Experiment and Theory” section, we now affirm its objectives and encourage prospective authors to consider The Journal of Physical Chemistry as a venue for the publication and dissemination of their most significant methodological advances.…”