At 7pm ET tonight, you might want to fire up your Steam client if you own Team Fortress 2 on your PC. A pretty big, and free, update is coming your way. Here’s some the things can expect from the update:

• Plenty of updates to the Source Engine, including fixes for networking, graphics, and player statistics, plus improvements to Source TV for tournament viewing.
• Three of the currently available maps (Dustbowl, Granary, CTF_Well) will see updates for enhanced performance and gameplay.
• A new map, Badlands, a new map that pushes control-point gameplay onto vertical landscapes.

Did we mention all this is free? So if The Orange Box on PC is your thing, start prepping your shooting finger and that FPS mouse.

No word on console patches or updates for this content. Requests to Valve for this information were not immediately returned.

[via Steam]