There's a private preview for big name developers (Unity already has DX12 implemented) but it's not going to be public until Windows 10 launches. Also, it's go

There's a private preview for big name developers (Unity already has DX12 implemented) but it's not going to be public until Windows 10 launches. Also, it's going to be exclusive to Windows 10. Not the end of the world since 7 and 8 owners get a free upgrade.