The new tariff is called "Zehnsation" ("Tensation") and costs 10 cents per minute to all networks. It's being marketed as a prepaid, but is really a 2-year contract with no line rental fees but a minimum usage of 10 euros per month. Nevertheless, the 10-cent cost to call other mobile networks is quite impressive, and the media are suggesting it might lead to further price reductions.
http://www.wiwo.de/pswiwo/fn/ww2/sfn...096/artpage/0/