If you haven't added the game to your Wishlist, it's perfect time to do it:
https://store.steampowered.com/app/1787480/Metro_Simulator_2/
As soon as the game is released, you'll receive an e-mail.
How about joining our Discord server?
Here's the link: http://discord.gg/invite/9eHyYap
Also, we have a group on Facebook: https://www.facebook.com/KishMishGames/
And a page on Twitter: https://twitter.com/kishmishstudio