Bukkit

• Added Item Displays (Similar to showcase and showcase standalone except more versatile.)
  
• Added localization (Virtually any message can now be customized for any language)
  
• switch to UTF-8
  
• removed /sellxp and /buyxp commands. (These commands are now included in /buy and /sell)
  
• added /setlanguage commands. (Language files can be loaded, edited, and changed all while the server is running.)
  
• added /importprices command. (This will import all prices from your item.yml and enchants.yml files into your selected SQL economy)
  
• added /makedisplay and /removedisplay commands
  
• numerous bug fixes and enhancements
  
• updated numerous prices
  
• added all 1.4 items and potions
  
• Fix dumb bug in language file...

The /importsql command is not finished.  I wouldn't recommend using it.  The backups should be good for a future update, however.