Dark Souls 3 isn't the last in the series - but it is a turning point - Eurogamer.net

"First of all, this is not the final product for the Dark Souls series," Miyazaki said in a roundtable interview at E3 attended by Eurogamer's Aoife Wilson. "However, I believe it's the turning point for the Dark Souls series. First of all, Dark Souls has a really unique worldview. It's not a good idea, continuously releasing titles for this series because of that factor. And this will probably be the turning point of From Software as a whole - it's the last project we started working on before I became president. It's basically From Software, they started working on this project when it was an older generation. So it's a turning point. It'll be a turning point, but it's not final."