As we previously mentioned, Trackmania United was getting a big free expansion, called forever; this addon has now been released, and the free version will be released within the next few days if all goes to plan! I'm currently in the process of downloading the addon, which I'd reccomend you do from gamershell or the like rather than the official site, which is bogged down byond belief, and I'll try to give my impressions later, providing I can get it functioning with my steam copy of the game (fingers crossed!)