The EBGames.com Website (thanks GameSpyDaily) has details on an unannounced multiplayer add-on for Battlefield 1942 titled "The Road to Rome" that's apparently in the works. Here's a bit from the EB listing, which also includes a batch of 20 screenshots (though the images seem to be broken at the moment):

Though multiplayer experience will be the focus of The Road To Rome, there will be a mode of unique single player action. These levels feature improved artificial intelligence with no scripting, meaning players will get a completely different experience each time.

• Six new maps from the Sicilian and Italian campaigns including Operation Husky (Sicily), and the battles for Anzio and Monte Cassino.
• Eight new vehicles including the German BF-110 and British Mosquito fighter bombers.
• Two new fighting forces including the French legionnaires and Italian forces.
• Three new hand-held weapons including a rifle grenade launcher, the British Sten SMG and bayonets.
• Proprietary Refractor 2 engine raises bar for graphics and 3D rendering.
• Huge multiplayer component supporting up to 64 players that requires teamwork and cooperation from each member in order to achieve victory for the Axis or Allies.
• Unique single player mode features no scripting, meaning the player gets different experience each time they play.