They have an ultrawide mode available now. Personally I find it very uncomfortable. You have to move your whole head to see the sides, and the vision pro is heavy. Looking off to the side for a length of time is uncomfortable.
By contrast, you have to use a giant screen on the Vision Pro to get equivalent resolution, which means you have to move your head. It still has its advantages (you can take it wherever you go, and the resolution of the virtual screen can be higher), but it's not yet comparable to a physical monitor, to my chagrin.