Wolfenstein Xbox Map - Downloaded Or Unlocked?

Thanks to EvilAvatar for pointing to a Boomtown.net article discussing whether the new Xbox Live-exclusive Return To Castle Wolfenstein maps released a couple of days ago were actually downloaded. It seems the size of the files downloaded from Xbox Live were way too small to have been an actual level, despite the official press release indicating it was a "downloadable map", so it's possible the maps were on the game disc all along, and all that was downloaded was an 'unlock levels' message. The Boomtown article puts its own spin on this: "Providing these levels as a sweetener for Live Subscribers would be all very well, if extra development - over and above that of the game itself - is involved. But if the levels are already developed and present on the disk, then the publishers are inviting flak from the many Xbox gamers who don't have broadband."