If you are looking for specific fixes in this exact build (3970), it was a minor "hotfix" aimed at stabilizing the 1.1 update, resolving issues with base building physics and multiplayer connectivity.
This specific string is the . It is often seen in: Grounded [v1.1.0.3970]
Located in the bottom corner to help players identify their current version for multiplayer compatibility. If you are looking for specific fixes in
Ensures that older save files are converted or loaded correctly into the updated game engine. Grounded [v1.1.0.3970]