Valve has released the Team Fortress 2 SDK, which means we can expect a load of new content from the modding community.

Valve releases TF2 SDK to the public for modders, allowing changes ranging from tweaks to complete conversions. Modders can ...
Eurogamer

TF2 master-maps offered to modders

Valve has updated the Source developer kits to include 10 original Team Fortress 2 maps. Beginner modders can use these as foundations to build on, while more experienced modders may relish the ...
PC Gamer

Pre-Fortress 2, a mod that bridges the gap between Team Fortress Classic and TF2, is coming to Steam with a whole lotta grenades

Team Fortress 2 modders love nothing more than imagining alternate histories for Valve's long-running multiplayer shooter, and this year has seen several of these nostalgia-tinged conversions migrate ...
GameSpot

Team Fortress 2 Classic Mod Is Available In Full Now

GameSpot may get a commission from retail offers. Although Valve still supports and occasionally updates Team Fortress 2 over a decade after it was originally released, many players feel the live game ...
PCGamesN

A decade in the making, long-awaited mod Team Fortress 2 Classic has a new name and a release date following Valve clash

Team Fortress 2 stands alongside Half-Life and Portal as one of the foundational pillars of Steam itself. But perhaps it could have looked rather different. Formerly known as Team Fortress 2 Classic, ...