You might want to check out the webinars that the NGS has been giving.
Another change is that NGS plans to standardize on meters and (international) foot, so no more official support of the US survey foot. There's currently a comment period going on until 02 December 2019. You can read about it (and comment if you want) here.
NGS, working with state agencies, plans to release a new set of State Plane zones. Some states may also opt to update their county / low-distortion projection zones or create a new set.
Here at Esri, we are waiting for NGS to release transformation information which will likely include files so we can make sure that we support the format(s) and are ready to include them when the final versions are released. Currently beta versions should be available next year.
Melita