we have a little bit more info about DLC2 on frenches forum, where i found those screen apparently the guy who posted is not an official Atari or Eden Games rep, and that what you can see on the screenshots after that i can read this morning someone ( moderator from the forum, so i don't think it's fake ) just called Eden Games twice this week and at the second call ( today ) someone told him that the DLC 2 is done , it will be available on PC first and then on PS3 and XBOX360 later, we just have to wait a little bit more ( that not a big info )
Here is the source (in french) , i wont be able to give you the real translation in English because i'm not good enough lol but use a translator
And today :
Source: [ALL] Blabla DLC2 - 20/03/2012 - Test Drive Unlimited 2 - Page 6 sur JeuxVideo.com