They were shared on anaconda 18 days ago. If they are not visible in the python backstage, try installing them through the python command prompt.
Click Start - Python Command Prompt
Type the following "conda install -c esri untools"
This should install the 2.9.0 version.
or to have a look-see at what else will happen during an install, here is the conda route... --dry-run is always a good idea at first, remove it if you are satisfied