It looks like Spyderco is adding additional it's kitchen knife lines: https://www.spyderco.com/culinary/
For a few years I have been in the market for a good serrated offset handle bread knife with at least a 12 inch blade. I am sure Spyderco can do this right.
Most of the ones I am seeing are only 9 inches, and so do not work as well on odd shapes and sizes of loaves as a longer blade. Also, the fewer blade strokes to cut through, the less deformation of the bread.