In this review of new developments in pulmonology for the year 2023, we look at two contributions in the diagnostic field: the optimal way of comparing a spirometry measurement with the expected normal values, and a new tool for identifying dysfunctional breathing. On the therapeutic front, a new molecule, ensifentrine, has been shown to be effective in a phase 3 study involving COPD patients. Finally, and still for patients with severe COPD, volume reduction, either surgically or endoscopically, can lead to an improvement in function and severity scores.