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.
Located in the bottom corner to help players identify their current version for multiplayer compatibility. Grounded [v1.1.0.3970]
Expanded building options, including the ability to build on trees and new structural supports. If you are looking for specific fixes in
Temporary seasonal items like Christmas trees and lights were added to the backyard. Technical Meaning of "[v1.1.0.3970]" Grounded [v1.1.0.3970]
Added the Chimney, Spiral Staircases, and half-walls for more creative base designs.
This specific string is the . It is often seen in: