@Tuco : ah, forget about my question. I just realised that Larian's Twitter account mentions a recent GDC talk, titled "The Many Challenges of Making Baldur's Gate 3". I think it takes quite some time before GDC publishes their talks on YouTube (or in the GDC Vault). Like, I wouldn't be surprised if we need to wait a couple of months.

Flash info : The Dark Urge is not an Origin Character. And it's not a new concept.