Today's update just expands the vcredist and directx redistributables to work on a wider range modern systems. Microsoft has depreciated some of the older redistributables, so today's update tries to bring things back up-to-date to address some issues some users were encountering.
These changes don't have an impact on actual gameplay, but may help some users avoid errors when launching into the game.
Added were:
- DirectX June 2010
- Visual C++ Redist 2010
Plus the already existing one which was:
- Visual C++ Redist 2013