Different Usages
Many modern uses of the term innate bisexuality are more indicative of Alfred Kinsey's research than Freud's. In this sense, it is a suggestion that most or all human beings are functionally bisexual to some degree, but may not express that bisexuality as behavior.
Both theories have a great deal of controversy surrounding them, so it is particularly important to be aware of which is being discussed.
Read more about this topic: Innate Bisexuality