Technically, we have seen more than 5 transformations but I think that a 5th one is still possible if you go back to the roots of a Saiyan and pull away from god and special forms like UI.
Say that Super Saiyan was to become a thing, what do you think it should look like? What color should the energy be?
Say that Super Saiyan was to become a thing, what do you think it should look like? What color should the energy be?