Updates to Team Fortress 2 have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Team Fortress 2

• Updated the Pilotka so it can be crafted, traded, and gift-wrapped
  
• Updated the Stahlhelm so it can be crafted, traded, and gift-wrapped
  
• Updated the physics for the Sticky Jumper projectiles so they behave like regular sticky bombs