This (and the other fixes) are still coming, it finally has a release date, I cannot share that with you due to expectations setting of course but I can say that we're still good for Q1.
I totally get the frustration of time from teaser to release but you have to take in to account that this bunch of fixes were shown while they were in active development and the road from there to release is longer than you may expect. It's a round of polish, 2 rounds of QA and on top of that finding a hole in the release schedule for it to fit in. You have to take in to account that I yolo'd these fixes in December with no planned release date on them and they have to fit in alongside whatever else is actually planned.
That all said, I am super excited to see you guys using it :D