- There won't be "normal" grenades anymore. Valve thinks that they unify the different classes too much.
- Unlike in Fortress Forever, teleporters are kept in Team Fortress 2. The ammo dispenser will make a comeback as well.
- There will be a personalized statistics system. For example, you could see an in-game message like "Hey, you've never played your class as well as today - keep it up!"
- Valve thinks that classes in other games are a joke. "Where's the difference between me choosing a M16 or an AK-47 rifle?", asks Robin Walker.
- It would be technically feasible to let owners of a PC, XBOX 360 and PS3 play against each other. Whether this feature makes it into the final game is still uncertain and depends on Sony and Microsoft.
- Valve received very few threatening letters because of TF2's comic design.
- Owners of multicore processors will get additional, undisclosed, graphics details.

Ah yes, and a rundown of the classes: Scout: Shotgun, pistol, baseball bat. Soldier: Rocket launcher, shotgun, shovel. Pyro: Flamethrower, shotgun, fire axe. Demo Man: Sticky bomb slingshot, grenade thrower, broken bottle. Heavy Weapons Guy: Machine gun (mini gun), shotgun, fists. Engineer: Shotgun, pistol, wrench. Medic: Machine pistol, healing ray, bone saw. Sniper: Sniper rifle, machine pistol, club. Spy: Revolver, cigar case (PDA for switching your disguise), knife.

If you havent had a look at the Team Fortress 2 teaser and Team Fortress 2 trailer have a look.