Easter eggs from Déraciné have nothing to do with a Bloodborne sequel.
宮崎氏: 憶測を呼んでしまって申し訳ないのですが，あれは純粋に悪戯です。 私も，また幾人かのスタッフもそうですが，Bloodborneというタイトルが好きなので……けれど，やりすぎたかもしれません。反省点のひとつです。 Hidetaka Miyazaki: I apologize for your misunderstanding. The easter eggs from Déraciné were included purely for fun. Many staff members including myself love Bloodborne, but with remorse, I think we went too far this time. Hidetaka Miyazaki has confirmed so! I knew Bloodborne 2 wasn't going to come out in the near future but damn😐 This doesn't mean that they're not working on a sequel for Bloodborne, but I do feel kinda disappointed😥