Its unknown yet whether these are the official system requirements or not, but we will keep you updated.Minimum Requirements:
# Pentium 4 3.2 GHz (3.4 GHz for Vista)
# 1GB RAM (2GB for Vista)
# Graphics card with 256MB of RAM support Pixel Shader 3 (PCI-Ex)
# Sound Card compatible with DirectX 9.0c
# 10GB free hard disk space
# Windows XP SP3 or Vista SP1
# 8x DVD Drive
Recommended Requirements:
# Intel Core 2 Duo 2.5 GHz or AMD 64 X2 2 GHz
# 2GB RAM (3GB for Vista)
# Graphics card with 512MB of RAM support Pixel Shader 3 (PCI-Ex)
# Sound Card compatible with DirectX 9.0c
# 10GB free hard disk space
# Windows XP SP3 or Vista SP1
# 8x DVD Drive
Source: Gamekaze