Announcement video: https://www.youtube.com/watch?v=dBxvN8mpJ9s
Sign up for testing here: http://playegress.com/Subscribe
Add Egress to your wishlist on Steam:
https://store.steampowered.com/app/750800/Egress/
Egress - Closed Beta starts on August 1st!
Source: Steam Community (opens in a new tab)