To me, it appears that upcoming releases of the iPhone OS have some rather compelling features to offer. As you can clearly see from this article, these features range from facial recognition technology to voice changing. All of these new features however, are still very much on the drawing board.
Some other cool features include the ability to allow or ban specific text. Helpful for when you are wanting a bit more control over what is being sent to whom. Perhaps the coolest of these text based features, is the alert where you are alerted to other email from the recipient you are about to send off the current correspondence to.
All of this aside, at this point this is merely “could be/should be” type stuff. While there is a strong potential for this stuff to come to fruition, thus far this has yet to actually happen. Perhaps this will change, but for now the whole thing is a bit of a pipe dream.