Valve updates Source SDK for TF2
Valve has released updated Source SDK files with inclusion of official map files of Team Fortress 2 maps, including the maps Lumberyard, Ravine, Badlands, Dustbowl, Granary, Gravelpit, 2Fort, Badwater, Goldrush, and Hydro.
The new files will give modders and map makers a chance to see how official maps are built, and also lets users tweak with all the settings. This is especially useful for new map makers, a good way of seeing how the best TF2 maps are built.
Valve plans to release more SDK content for TF2 in the near future.