MSDN Library 4月版本已经发布，此次发布的内容包含：
# Visual Studio 2005 Service Pack 1 文档
# Visual Studio 2005 主要文档更新
# Windows Vista Developer 文档
# Windows Driver Kit (WDK) 文档
# SQL Server 2005 Books Online 产品文档
# SQL Server 2005 Compact Edition Books Online
# Microsoft Knowledge Base
Download: MSDN Library (April 2007 Edition) – Includes Visual® Studio 2005 Service Pack 1 documentation.
