Origin's Need for Speed Most Wanted Page reveals system requirements for the upcoming racing sequel (thanks VG247), showing the DirectX 10 game will require Vista or Windows 7. Here they are with a few typos corrected:

Minimum System Requirement:

OS: Windows Vista (Service Pack 2) 32-Bit
Processor: 2 GHz Dual Core (Core 2 Duo 2.4 GHZ or Athlon X2 2.7 GHz)
Memory: 2 GB
Hard Drive: 20 GB
Graphics Card (AMD): DirectX 10.1 compatible with 512 MB RAM (ATI RADEON 3000, 4000, 5000 OR 6000 series, with ATI RADEON 3870 or higher performance)
Graphics Card (NVIDIA): DirectX 10.0 compatible with 512 MB RAM (NVIDIA GEFORCE 8, 9, 200, 300, 400 OR 500 series with NVIDIA GEFORCE 8800 GT or higher performance)
Sound card: DirectX compatible
Keyboard and Mouse
DVD ROM Drive

Recommended System Requirement:

OS: Windows 7 64-Bit
Processor: Quad-Core CPU
Memory: 4 GB
Hard Drive: 20 GB
Graphics Card: DirectX 11 compatible with 1024 MB RAM (NVIDIA GEFORCE GTX 560 or ATI RADEON 6950)
Sound Card: DirectX compatible
Keyboard and Mouse
DVD ROM Drive