The 1.4 patch will:

Eliminate cheats - Nothing ruins a game like someone who’s cheating.  But thanks to the 1.4 patch, most every type of cheating will be stopped. 
Add Linux Server Support
Add two new guns -- The DP 1928 - Japanese Assault rifle and the Type 99 - Russian Assault rifle. 
New and improved sounds in 1st person view, such as increased volume of impacts, louder grenade explosions and a new sound for the Axis Assault rifle STG44.
Add a new blood effect for additional feedback when you are hitting another soldier. 
Improve the voting User Interface – Is there one guy on your team that’s acting like a “Smacktard”? If everyone else feels the same way, it’s now easier than ever to get rid of him.
Add to the scoreboard the show the current server's name, IP address and map name. Scoreboard also shows each player's ID number, which is used for creating your buddy list/voting to kick a player.
Rear gunner for Stuka/SBD/Ai-chi-val now has crosshair.  This will add greatly to the lethality of this weapons platform.