Bandai Namco will announce Dark Souls 3 at E3 2015, according to an unconfirmed rumour reported by VG247.
Miyazaki served in a supervisory capacity on Dark Souls 2, with Yui Tanimura and Tomohiro Shibuya co-directing the game.
It's important to note that, as of yet, this game has not been officially confirmed by Bandai Namco or From Software.
In May, Sony Computer Entertainment's World Wide Studios' Shuhei Yoshida confirmed a Bloodborne DLC expansion pack is in development, and more details are going to be revealed "later this year."
It is unclear whether Miyazaki, who directed Bloodborne, will also be involved with its expansion. Or if, as the rumour suggests, he has moved on to a new project.