Are there any new treatments for a deviated septum?

Probably not. If a deviated septum is causing your nasal breathing to be obstructed, and if you are unhappy about it, and if that cartilaginous deformity is affecting your quality of life, then surgery is the answer. I am aware of nasal elastic bands for the outside of your lower cartilages, but they only widen the nostrils. The deviated septum will still need to be surgically altered.
Deviated septum. a deviated septum can be corrected surgically to bring the septum to the midline. If there are symptoms like nasal obstruction, snoring or recurrent sinusitis, have your nose evaluated by a board certified otolaryngologist. Surgery is the only option.