I think it would be unlikely to be added as Larian still has a bunch of classes and subclasses to add from current official dnd 5e content. Like right now every class is very incomplete as is, let alone the warlock that basically has only one functional pact right now, only one pact boon, and missing spells. Wizard has a lot of schools of magic to go through and a lot of spells. Bard, Druid, and Sorceror have yet to be added. And on outside content, they might add Bloodhunter as it is kinda official and kinda not I think?