Comment 5 for bug 1826244

>When will this package be available again? Where can I track the status?

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914761 is the reason it was removed and following the links I ended up at https://salsa.debian.org/debian/mysql-workbench/merge_requests/1. Looks like a newer version of mysql-workbench is prepared, but it hasn't entered the archives yet. Apparently the mysql-connector-c++ need to be updated as well, see the merge request discussion for more details.