Well, it has been released here :
Minimum System Requirements?
CPU Speed: 2.4 GHz Dual-Core 64-bit CPU
RAM: 4 GB
OS: Windows 7 SP1 - Windows 10 (x64)
Video Card: DX10 Compatible GPU with 1 GB VRAM
Free Disk Space: 10 GB
OS: MacOS X 10.6.6 or higher
Processor: 2 GHz Equivalent CPU
Memory: 4 GB RAM
Graphics: OpenGL 3 Compatible GPU with 1GB Video RAM
Hard Drive: 10 GB HD space
Keep in mind these can change closer to release so we’ll keep minimum system specs updated.