The official Bethesda Blog have published the basic system requirements for Wolfenstein: The New Order.
PC System Requirements
•64-bit Windows 7/Windows 8
•Intel Core i7 or equivalent AMD
•4 GB System RAM
•50 GB free HDD space
•GeForce 460, ATI Radeon HD 6850
•High Speed Internet Connection
•Steam account and activation required
What's interesting is that installation requirements for consoles have also been revealed, and it looks like that game is rather huge.
PlayStation 4
•Hard Drive Requirements: ~47 GB total install
•Voice Commands optional
Xbox One
•Hard Drive requirements: ~47 GB total install
•Kinect support for Voice Commands (English, French, Italian, German, Spanish only)
Xbox 360
•Hard Drive requirements: 8 GB minimum
•Game includes 4 discs, including the first disc that is a mandatory installation disc.
PlayStation 3
•Hard Drive requirements for disc play: 8 GB HDD space
•Hard Drive requirements for PSN download: 17 GB HDD space