World Of Warcraft: Legendary and Artifacts

A player in the General forums asked:

When BC comes out, will there be additional legendaries, as well as maybe an artifact or two for players to find?

And Tseric gave him and the rest of us the answer:

The devs would like to improve on Legendary items through addition or revision. At this point, adding Artifact items is somewhat unnecessary, as it would only mostly serve to devalue Legendary items as a whole.

Perhaps when the level cap gets a little higher and that next step in itemization is needed.