We are working on that at the moment, currently planning to have it in release 1.4 (most likely the next one, if no urgent reason comes up for 1.3.3).
No promises but we are targeting November but since we have to juggle a few things for this release we might miss that. You should not plan a project based on that.
We will try to get as much automatic detection into the first LUT release but how pressed for time we are will decide which detections make it in there and which do not. We definitely have LUT autodetection in Arri Prores files on our agenda.