Even with a recommended specs you can't really follow that. But if you want a idea on what they may be the beta spec should not change much from now to release.

OS: Windows® 7 64bit
CPU: Intel® Core™ i5
Memory: 4GB
Hard Drive/SSD Space: 20GB
Graphics Card: NVIDIA® Geforce® GTX 5xx series AMD Radeon™ HD 7970

If you looking for a video card should wait for the 700s if your a NVIDA fan.