Ryanair at Dresden - not likely
There is silence on this in the German media. My gut feeling is that this was just a rumour, and FR at DRS is not happening. I'd expect LH/4U and AB push DRS hard not to do this. E.g. LH runs a likely loss-making LHR service and many flights to FRA a day, which are its long-haul connection life-line. So DRS owes them something. A small number of EZY flights could be more acceptable to LH/4U/AB, as the ticket price difference is much smaller than with FR. DRS could just phone CGN management, why the FR deal there never happened.