“Dark Souls is over,” Miyazaki stated in an interview with GGN Gamer, which has since been translated via Google Translate. He continued on to say:
Miyazaki has stated in the past that Dark Souls III will be the final Dark Souls game, and he used this interview to reiterate that statement:
One can assume the same feelings apply to Bloodborne, which despite not being a proper Souls game, draws heavily from the Souls game structure.
There is one franchise Miyazaki is very interested in continuing, however – Armored Core:
Despite starting development on a new IP, FromSoftware is still hard at work when it comes to post-release content for Dark Souls III, with Miyazaki confirming two DLC packs will be arriving in Fall 2016 and early 2017.