Today Blizzard Poster Bornakk posted an updated system requirements for World of Warcraft once the new Wrath of the Lich King expansion launches.

(Source )

We have updated computer system specifications required to run World of Warcraft in preparation for our next expansion, Wrath of the Lich King. Please also note the recommended specifications, which, while certainly not required, generally provide a more optimal gaming experience.


PC System Requirements

OS: Windows XP (Service Pack 3), Windows Vista (Service Pack 1)

Processor:

• Minimum: Intel Pentium 4 1.3 GHz or AMD Athlon XP 1500+
  
• Recommended: Dual-core processor, such as the Intel Pentium D or AMD Athlon 64 X2

• Minimum: 512 MB RAM (1GB for Vista users)
  
• Recommended: 1 GB RAM (2 GB for Vista users)

• Minimum: 3D graphics processor with Hardware Transform and Lighting with 32 MB VRAM
  Such as an ATI Radeon 7200 or NVIDIA GeForce 2 class card or better
  
• Recommended: 3D graphics processor with Vertex and Pixel Shader capability with 128 MB VRAM
  Such as an ATI Radeon X1600 or NVIDIA GeForce 7600 GT class card or better

• Minimum: PowerPC G5 1.6 GHz or Intel Core Duo processor
  
• Recommended: Intel 1.8GHz processor or better

• Minimum: 1 GB RAM
  
• Recommended: 2 GB RAM

• Minimum: 3D graphics processor with Hardware Transform and Lighting with 64 MB VRAM
  Such as an ATI Radeon 9600 or NVIDIA GeForce Ti 4600 class card or better
  
• Recommended: 3D graphics processor with Vertex and Pixel Shader capability with 128 MB VRAM
  Such as an ATI Radeon X1600 or NVIDIA 7600 class card or better