Sometimes you just need a new business portrait. Not that anything is wrong with the old one, but you change, hair changes maybe a wardrobe change. These images are about 4 years apart and it's a slight difference but enough that a new one was needed. You don't want people to not recognize you or tell you that your photo doesn't look like you. More often a professional photo is needed over a dated or unprofessional snap shot that is being used, but even with a professional photo, it is a good idea to keep it current.