From Jose Barreto's Blog : Windows Server 2008 Hyper-V released today! (includes a list of main Hyper-V related links)

 

Hyper-V is here!

As you can confirm on the press release linked below, the final release of Windows Server 2008 Hyper-V was just announced.
You can download the final version (number 18016) immediately from the Microsoft download web site.
This version will also go to Windows Update on July 8th.

Below you will find a collection of links about Hyper-V.

Windows Server 2008 Hyper-V RTM information

Press release on Windows Server 2008 Hyper-V RTM
http://www.microsoft.com/presspass/features/2008/jun08/06-26hyperv.mspx

John Howard's blog post about Hyper-V RTM
http://blogs.technet.com/jhoward/archive/2008/06/26/hyper-v-rtm-announcement-available-today-from-the-microsoft-download-centre.aspx

Hyper-V RTM Guest Operating System Support Note
http://support.microsoft.com/kb/954958

Jose Barreto's Blog : Windows Server 2008 Hyper-V released today! (includes a list of main Hyper-V related links)