An update to Team Fortress 2 has been released. The update will be applied automatically when you restart Team Fortress 2. The major changes include:

• Added new series of Chemistry Sets
  
• Added "Collector's" item quality. "Collector's" items are created by completing special Chemistry Sets.
  
• Added a server cooldown period for Eternaween votes
  
• Spooky Keys are now regular keys
  
• Fixed seeing the fire texture on The Maniac's Manacles, PY-40 Incinibot, The Parasight, and The Foul Cowl in DirectX 8
  
• Fixed some Halloween spells not working during Eternaween