Yes, it's true. The new directors of the Dark Souls sequel want more accessibility. Overall, things will change.
But that doesn't mean the core of the original title will be summarily dismissed, and in its place fans will find an unrecognizable game designed for mainstream appeal. That would be an erroneous assumption. Or so producer Hidetaka Miyazaki said in a recent Famitsu interview (as cited by Polygon ):
"If we're going to announce this as a sequel to Dark Souls then I think there's certainly a core that we need to protect. I'm talking about how we think about the difficulty level and how you achieve things in-game; about the concepts behind the mechanics and level design."
He did add, however, that it's probably better to "leave things to the discretion of the director" and there's a lot around that solid core that the team needs to "fix or adjust." So essentially, it's more about tweaking and adding new layers of polish, rather than a fundamental alteration to the game's style or mechanics. So yeah, the fans probably shouldn't worry.
Related Game(s): Dark Souls II