We are releasing frequent updates to the Unstable branch, accessible via the Beta version on Steam. If you want to have the access:

1) Join the Discord - https://discord.gg/railroute
2) Follow the steps in #unstable-version channel

Do please forgive me for wanting you to be on the Discord. That version can contain game-breaking bugs, and I would like to have direct contact with you. You can submit bugs as tickets there. There are also patch notes for that version. Think of it as more of a win-win.

Thank you.
Happy Dispatching!