RDUairport, you didn't see that rendering on this site, did you? That sounds like something you'd see on airliners.net -- but I don't remember seeing it there.
As for terminal expansion, I believe that there is a long-term plan for an "island" terminal of sorts - they'd move the international ops from D concourse and into this new offset concourse. This, I believe, has something to do with the multi-modal freight hub that is also "planned" for KCLT.
As for short-term expansion, I think that further expansion of concourse E remains a possibility, but KCLT might actually be through with it's E expansion.
Let me know if you come across anything else; you know the airport website always has a decent amount of info. about long-range planning and capital projects.
FINALLY: Anyone catch the blurb in the "Insider" on charlotte.com this morning? Lufthansa is, in fact, pleased with its loads from CLT to Munich. Anyone think there are some Charlotte residents headed to the World Cup? I'd bet.