The new info on the minimum system requirements is practically the same, except for the HDD space: 12GB instead of 16GB. It’s less, but still double than the initial estimations.

Minimum System Requirements
– OS – Windows XP or Windows Vista
– Processor – 2.8 GHz or faster (XP) or 3.2 GHz or faster (Vista)
Supported Processors: Intel Pentium 4 2.8 GHz (3.2 GHz for Vista) or faster, Intel Core 2.0 GHz (2.2 GHz for Vista) or faster, AMD Athlon 2800+ (3200+ for Vista) or faster.
– Memory – 1.0 GB RAM (XP) or 1.5 GB RAM (Vista)
– Video Card –256 MB
Supported chipsets: NVIDIA GeForce 6800 GT or greater; ATI Radeon 9800 Pro (Radeon X800 Pro for Vista) or greater. Laptop versions of these chipsets may work but are not supported. Integrated chipsets are not supported. Updates to your video and sound card drivers may be required.
– Hard Drive – 12GB
– Sound Card – DirectX 9.0c compatible

Recommended System Requirements
– OS – Windows XP / Vista
– Processor – Intel Core 2 DUO  2.2GHz or AMD Athlon 64 X2 4400+
– Memory – 2.0 GB RAM
– GPU – NVIDIA GeForce 8800 GTS/640 or similar

Hopefully, these specs will be lowered through future patches.