We've been pretty quiet lately, but thankfully, that's about to end. In the next few days we'll have an update out that has a couple of new features for the Engineer and Spy, and a variety of other smaller fixes.

Teleporters will be upgradeable to level 3. As the teleporter is upgraded, the cooldown will decrease.
Dispensers will be upgradeable to level 3. They will heal faster and generate metal faster as they are upgraded.
Spies will be able to recharge their cloaking ability by picking up ammo off of the ground.
We've made a bunch of minor changes by adding particle systems and upgrading the HUD to show things like deaths by critical hits, players that are overhealed, and giving more information to medics when people are calling for them.
These are just to work on some class balance and depth issues that we've seen in the wild with these two classes, but aren't meant to replace their entire class packs. They will be getting more attention further down the road.



While that's in testing, we're off working on several things that folks have been emailing us about, so we thought it'd be good to provide some detail:

The next class pack will be the Scout. One of the main goals we're focusing on for him has been to provide tools that make him useful in maps like Dustbowl & Goldrush. If you have any ideas for what you think would work well, post them over on the Team Fortress 2 Forum and we'll take a look.
We are actively working on a massive XBox 360 update, which will include pretty much everything we've shipped on the PC in the last year. We'll provide you with a rough date when we have one.
We're also working on bringing over a variety of engine improvements from Left 4 Dead into the TF2 engine, but it won't be a wholesale replacement of the engine. This means we'll get some of L4D's performance improvements, like the better multicore support, but not all of them. For example, we can't bring over some improvements without dropping support for DX8, which we're not prepared to do.