Sorry but this just bullshit and clearly a fake.
First the major one why would Warner allow Rocksteady to work on something for a much smaller audience than DC games?
Second Rocksteady has no RPG experience.
Third where the hell is the Warner Games brandlogo?
And fourth Lmao No from Jason Schreier and also from me.
I really don´t know who the new dev studio is but something is clear. This new studio (if it exists of course) is an independent studio
(which isn´t owned by a big Publisher) or a studio like Harebrained Schemes which is owned by Paradox.
Its seems very likely that this studio is for most people very likely a pretty unknown studio.
So all news scoops that Bloodlines 2 is now made by Obsidian, Arkane, Bioware, Blizzard or any non RPG studio is bullshit. Also no CD Project Red of course.