Unless you follow the TF2 blog religiously or are a part of the TF2 Escapist group [http://www.escapistmagazine.com/groups/view/The-Escapist-Team-Fortress-2-Group-PC], you may not know that the third annual TF2 Sream Fortress Event has Started [http://www.teamfortress.com/]. In which you will battle a giant eyeball whilst scrambling around the map picking up presents before the rest of your greedy teammates can. So we've got a new boss battle along with a ton of new hats and costumes*. Everyone gets a free item to, and you can get more of them by playing on the Halloween map Eyeaduct.
Looks like it's going to be pretty fun. Unfortunately, Steam is overloaded right now so the download is taking quit some time. But hey, at least it's finally out!
*Halloween restricted, so no need to bicker about the art style being ruined by full body costumes