Here is a list of major issues fixed by Patch 1.031
Steam Cloud sync
The game is now directly saving to the synchronized Steam Cloud folder. This means that you cannot accidentally overwrite your save files anymore by switching to a different Steam account on the same computer.
The save files (persistentgamedataX.dat, gamestateX.dat) are now in a folder inside your Steam userdata directory that will automatically be synced with the Steam servers.
On Windows, the path is C:\Program Files (x86)\Steam\userdata[account id]\250900\remote
Random disconnect of some game controllers
Players experienced an issue where the Sony DS4 controller was disconnected randomly when using both analogue sticks at the same time.
Other than that, expect a lot of minor bugfixes and some balancing fixes.