The Spy Update

Looks like we're getting the fast one pulled on the next Team Fortress 2 update.  In addition to the awesome Sniper weapons, we get the Spy update as well!

Here's a link.

Something interesting to note in the fake advertisement.  It shows several articles of clothing.  Could the "Camera Beard" be one of the psy's upcomming hats?

Also there is some sort of detector cart.  Could the Engineer be getting a new buildable item in the form of a Spy detector?

I was speculating on what would make a good Engineer upgrade.  Two things came to mind.  Some sort of "infared" camera that would allow the engineer to see spies (possibly by viewing it through the dispensor), or a sentry gun that simply shot at everything that isn't the engineer who built it (ie friends and enemies (and spies)).  Alternately some sort fo gun that maybe did less damage or reacted more slowly that could see spies.

Basically, Engineers need something that can see spies.  Especially with these new items.