List of fixes in version 1.4.0: 

Hardware, performance & stability issues 
* Resolved various stability issues 
* Numerous general performance optimizations 
* Significantly reduced RAM memory usage 

Gameplay issues: 
* Added option to disable film grain video effect. 
* Fixed the issue with reaching Survivor Rank 25 
* Optimized video memory management to eliminate ResizeBuffers failed 0x887a0005 error message 
* Fixed extremely long load times that some users were experiencing 
* Resolved issues with unlocking certain achievements 
* Fixed the issue with ammo disappearing from players inventory when attempting shooting challenges 
* Resolved issues with Personal Statistics menu 
* Fixed problems with using keys assigned to gameplay features during chat 
* Fixed duplicating weapons exploit 

Be-the-Zombie mode: 
* Fixed the infinite spit exploit in Be-the-Zombie mode 
* Fixed several issues with connecting to games when playing as the zombie 
* Added additional tools for tracking network issues 

Game data integrity (modding): 
* Games can be modded 
* Modded games will not work online with original unchanged versions 
* Modded games will work with other identically modded games 

Graphical Bugs: 
* Resolved extremely low resolution textures on certain objects regardless of texture quality settings 

Linux specific improvements: 
* Fixed motion blur switching via main menu 
* Fixed messaging when playing cross-platform session 

Known issues we are still working on: 
* Screen flickering when using dual-GPU setups 
* Radeon support on Linux platforms 