For you to know - i agree with your premise, but think you are kinda hand-waving here. So no - i think larian should have an idea of whats gonna be in the patch after ~four months of testing changes. sure bugs can delay the update, but saying that larian doesnt have any idea of what the next patch will contain is disingenuous.
Oh, maybe I'm hand-waving. And you're assuming a bit too much about how they spent those "~four months" of testing changes, implementing new changes, postponing some changes for the next patch... and you're totally ignoring the fact that they delayed this patch because of bugs.