New winter tyre obligation

I have recently read somewhere that the new winter tyre obligation is already coming into force this year. Is that true? Also on the ADAC page or at my-werkstatt.de, where such news is always published immediately, I find nothing to do with it. If there is this winter tyre obligation, when do I have to have it on? Is that fixed on the month or on the weather conditions? Some say O to O. Oktober to Easter. But I will not be in October at 25 degrees winter tyres a Oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, oh, my God.