I'm delighted to announce that that Windows Server "Longhorn" Beta 3 is available to download HERE.

You can get a lot more technical detail about Longhorn on the TechCenter.

Also if you really want to roll up your sleeves you can check out some of the webcasts below:

TechNet Webcast: What Is New in Windows Server "Longhorn" (Level 300)

TechNet Webcast: Overview of Server Manager  and PowerShell in Windows Server "Longhorn" (Level 300)

TechNet Webcast: Cluster Validation in Windows Server "Longhorn" (Level 300)  

TechNet Webcast: Internet Information Services 7.0 in Windows Server "Longhorn" (Level 300) 

TechNet Webcast: Windows Server "Longhorn": Advancing Network Security (Level 300) 

TechNet Webcast: Windows Server "Longhorn": Server Virtualization Solution Scenario (Level 300)

TechNet Webcast: Windows Server "Longhorn": Branch Office Solution Scenario (Level 300) 

TechNet Webcast: Windows Server "Longhorn": Centralizing Application Access with Terminal Services (Level 300)