Valve's announced a public beta for Team Fortress 2.
The beta is open to anyone who has a copy of the online shooter and has been set up to test "new technologies without the risk of breaking the game".
Valve says the update includes class, item and weapon changes along with "higher level, game-wide experiments".
Access to these new technologies can be gained via the Steam Library.
The last update to hit the PC version of Team Fortress 2 was a Halloween offering adding a Headless Horseman bot to the mix.