I have read that on September 21 they release a large patch.
The thing is that it doesn't say anything about the split screen, they say that it is because of act 3 in which the game does not go as well as in 1 and 2.
So if they solve it (which I don't have much hope for) it will either be on the 21st or it will be a couple of weeks later at best.
Can you provide context? I wasn't able to find any details of the patch other than the expected release date.
