I just looked at this as it appears to be a very good offer. But it seems to be available only to people with a permanent address outside Europe.
"Please note:
The German Rail Pass offer only applies for people with permanent residence outside Europe, Turkey and the Russian Federation. If you are European and live outside Europe you must have left more than 6 months ago (the stamp in your passport is decisive)."
http://www.bahn.com/i/view/USA/en/prices/germany/germanrailpass.shtmlThe inclusion of /USA/ in the website address would seem to indicate that this offer is aimed at transatlantic visitors.