Well they drilled about 2,000m in October 2017, so between 200-400 days, plus holidays etc, so it's been say 18 mths now since drilling finished, so you should have all the results back towards the end of 2020, actually looking back to the Oct 2017 ann, I saw this;
So it seems this story hasn't changed significantly in the last year and a half?
I wouldn't hold you breath, It's probably like taking this up as a sport....
https://www.newscientist.com/article/dn25441-longest-experiment-sees-pitch-drop-after-84-year-wait/Tubber