Windows Server 10 Tech Preview has been released. I did a first quick test with a single server installed as a domain controller and a Windows 10 client joined to the doamin.
A few notes…
– The highest forest and domain functional level that was available to select was 2012 R2.
– AD schema version is 72. The previous version for 2012 R2 was 69.
– The Windows 10 Tech Preview client joined in with OS version 6.4
You can download an evaluation version of the Windows Server 10 Tech Preview from Microsoft TechNet Evaluation Center.