Miyazaki says Dark Souls "has been completed by players" so no more secrets then

It's been four years since the launch of the original Dark Souls and people are still hunting for undiscovered items, but game director Hidetaki Miyazaki says he's confident we've found everything. In an interview in the upcoming issue of Edge Magazine, Miyazaki admits that he feels that the game was never truly complete but players have seen everything on offer. Is there anything they haven't found