Sigma has filed a list new wide-angle prime L-mount lenses today. They are 16mm f/2 DG DN, 18mm f/1.8 DG DN, 18mm f/2 DG DN, 20mm f/1.8 DG DN, 24mm f/1.8 DG DN, 28mm f/1.8 DG DN, 34mm f/1.8 DG DN lenses. You can take a look at details of these L-mount lens patents:
