Thank you for your responses.
One more question, when can we actually expect RTX support to become part of regular releases, beyond this preview version? To me, it is the feature of interest No.1. I purchased 2x RTX 2080Ti solely because of Octane last year in November and still cant use them to their full potential more than half year later. Obviously, that was my choice, still i made it in good faith it will actually become usable feature soon enough for it to matter, at least half-way into the life-cycle of Turing generation. Which may be about now, hence my question.
I did not buy them in that time, because Otoy said we would not see this in the first half of 2019. I think I read that in one of the threads of they Facebook page when It just got released.