Yes, the current official formula doesn't contain formalin anymore, so probably the Rollei kit doesn't either.
Furthermore, the formalin content of stabilizer solution was so low that it doesn't cause any real problems in normal, safe usage. Formalin exists almost everywhere today and is a source of allergic reactions, more than a carsinogen. It's used in some fabrics in furniture etc., so if you want to avoid it, you have to be very careful. Good thing in stabilizer is that you KNOW it has a minute amount of formalin so you can be careful; the "hidden" formalin around us is, though, a real problem.