Sadly, I get an error "authentication failed": "Object reference not set to an instance of an object. The game can't recover from this error and will shut down" on linux version after this update.

There was someone that experienced the same issue on prior versions of Eco already, please feel free to reach out to support@strangeloopgames.com for further investigation. Your SLG account details will be necessary.

You can switch to older versions of Eco in the meanwhile via Steam betas if for you this indeed only happens on this version.

Question for me. This seem not only be the fixes if the update is 1.5 GB large, isnt it?

Well done

When can we expect version 1.0?