If you're in the process of evaluating the upcoming Windows Server 2008 and looking for a one-stop location for information on planning, deploying, maintaining, or supporting the new environment, bookmarking the Documentation Survival Guide is a great place to start. And here's some of that great new content I'm referring to:

Internet Protocol Security Enforcement in the Network Access Protection Platform

Server Core Installation Option of Windows Server 2008 Step-by-Step Guide

Windows Server 2008 for Itanium-Based Systems Feature Support