So, yeah.
http://www.teamfortress.com/engineerupdate/
Limited golden wrenches are out.apparently when you kill people with them, their body turns into a statue for a few seconds and then drops, which is cool.
You get them from random loot drops (according to rittu), so get in-game, guys!
If you look on that page there's a triple tophat, maybe that's a new hat coming soon?
Also for people who didn't notice: http://www.teamfortress.com/engineerupdate/wrangdigan/
That was on that page Rai posted. Just a little picture.
Engineer Update is Here!
July 8, 2010 - TF2 Team
Say you have two things: a perfectly good hand, and a brilliant inventor for a grandfather. One day you stumble across a blueprint for an amazing-as-hell robot hand meant to replace an arm-stump. Wait, you have three things: the hand, the grandfather, and a saw.
The final day of the Engineer Update unveils the Gunslinger, a mechanical stump-mounted monstrosity; "Thunder Mountain", the most awesomely named of our Valve-created Payload Maps.
Stop reading. Go play!