The news in the second link is from may last year yet we didn't see anything yet. (on other handsets too)
I do want to believe Apple incorporates this into it's display instead of the other options mentioned here before like TiD on the back/side or no TiD at all.
As for your first link, can't acces it right now, somehow my VPN connection doesn't allow it.
Sorry about that,don't worry though as the second link to the Korean newspaper report is where most seem to have got their sources anyway.
That is the downside to the story, that they haven't managed to get it into a device on sale yet....
Maybe next year?