This really is a heavy update. Valve has announced that they plan to make good on their promise of delivering the heaviest update to Team Fortress 2 yet, adding "TF2 Arena" mode to the game. Here is their description:

TF2 Arena keeps the class diversity of Team Fortress 2 while focusing goals around combat between two teams. Where other game modes lean towards a broad overall strategy for the team over a number of lives, Arena concentrates on the specific tactical choices the teams make in a single fight.

Arena features smaller maps that play out in shorter periods of time. The round ends once one team has no players left in the arena, or when the central capture point has unlocked and been captured. Rounds tend to be very fast and highly competitive, with an emphasis on your team’s class makeup and your plan to counter the opposing team’s class choices. Arena mode is great for smaller matches of three vs. three players, while still comfortably supporting huge knockdown twelve-on-twelve brawls.

Arena mode will launch with five playable maps originally including the newest addition to the game a forest area called Lumberyard, set in, well, a lumberyard. This is the new locale promised, and while it isn't nearly as cool as the rumored jungle level, the new area is pretty cool looking. Another new map is called Ravine, with a focus on choke points. Full information can be found on their website, located here. The update is still scheduled for today, so we should be playing it very, very soon.

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