itch.io

As far as I know, Sam Tail is the solo developer for The Fixer.  They post a progress report on Patreon every single week.  Even if you choose not to become a patron there, you can still glean some info on what is being worked on just by checking the headings.

im a member of their patreon and yes they are working alone. there are more recent versions than this one available on patreon and i would estimate that after maybe a month or two there will maybe be an update here. theyve talked about starting to finish the next free version recently