Someone on steam answered my question:
The latest experimental hasnt been released yet- If for some reason you still had the option before, it was from A19 experimental, and will have been taken down so that the A20 experimental could be put up.
I guess I never noticed the option disappeared...
click on the
"Please be aware that a wipe of previous Save Data and Generated Worlds is recommended for A20 Experimental"
banner and it will give you instructions
just in time for A20, I cleaned and wiped all my data as per the instructions. I double check to make sure I'm opt'd in and it's no longer on my list.
Anyone have any ideas?
https://www.dropbox.com/s/yzvvlq1fw7r33gl/567576476.jpg?dl=0
^what my drop down list looks like
Been playing since 12.5
TFP can't stick to a deadline to save their lives. Whatever their first estimate is always tack on 2-3 months to it.
The first estimate for A20 was Halloween weekend.. so start to get impatient by Xmas weekend.