My TF2 thinks it's halloween...

[Zeron]

Powerups are halloween themed and so are the menus, what gives? :O

[ShenanAgain]

It's a full moon. Halloween restrictions are dropped for a couple days during a full moon.

[DarkCrystalMethod]

Not Halloween, just a full moon.
Also its a really big one if you step outside this weekend... Its coming right for us.
(Actually its on the closest orbit pass by Earth, so check it out and then get back to TF2)

[Rastalin]

full moon

[Essjon]

Its a full moon lol.

[zack]

This means it's a full moon.

Although on a side note lovely Saigns servers can cause your client to think its halloween also. So possibly it could be that, but it was a full moon recently so...

[Cyber Rider]

Full moon

[Lardass]

One or two days a month it allows Halloween only items