Full notes
Full Concrete and Steel update
Read the full published notes in a cleaner layout. The original post stays linked below.
Further to Update 3 released last night , this update fixes not being able to load savegames among other things. This update also gives you the ability to make cylindrical freeform shapes! Just hold C and scroll with the mouse to change freeform shape.
Source
Changelog.gg summarizes and formats this update. How we read updates.