From what I've read, the current WCS has the following things changed/added :
-There can now be WCS addons loaded from and by the WCS mod. -The changerace menu will now be a lot faster due to a fix Yiyas has made. -The changerace menu no longer shows the total level needed for a race, but how many more you need. -A check for player_hurt has been added. -A fix has been added to the raceinfo command.