In accordance with comicbook.com the initial season of the series has premiered very long ago and as the second season of the series is going to be as big that the initial one
Because back then there was an announcement about the second season that was made by the makers of the series. And suddenly the second season is going to pop up, with the new season.
In the latest trailer that was released we find the old people and everything old and accompanying the old one we are also going to witness something new about the second season too.