Much like the last update that made significant changes to the Medic class, the next update for Team Fortress 2 is almost ready and will spotlight the Pyro.
The Pyro will be getting its own achievements and unlockable weapons. One of these weapons is a new axe that will always critical hit enemies that are on fire.
They also sent word that the next character movie will be "Meet the Sniper" and should release soon.
Valve plans to release updates with achievements and weapons for each class in TF2. Again, this is PC only, folks.