postgres update return new values and old values

query.sql

-- returning updated values and old values by using a sub-expression

update orders
  set type = 'delivery'
  where id = 3767
  returning id, type, (
    select type from orders where id = 3767
  ) as old_type;

How does this make it ?

I just asked CHATGPT and it showed the same way as the gist showes, also it's okay to use with clause to make temp table to store the old values or use triggers with OLD keyword , but I think the subquery one is the most convenient way.