My father in law never updated his will. He though he had. He told everyone he had. He even told people what he wanted and who got what. I guess it was all the painkillers talking. In three years of having terminal Cancer he never wrote a new will. The old one is almost thirty years old. It does not include his children. It gives everything to his then girlfriend. Someone he has not seen in decades.
All the promises, plans, expectations and infighting were for nothing because he never changed his will. I feel really bad for everyone involved. Their Dad told them he was splitting everything evenly for his three boys. Now they get nothing, zero, zip. What a slap in the face. All the insurances he said he had, he did not. So now there are huge outstanding bills and fees to pay.
There is a lesson here. Update your will as your life changes.