Microsoft SQL Server 2012 Release Candidate 0 (RC 0) introduces two significant documentation changes; a new help viewer that changes the way that you install and view the documentation, and the documentation has been restructured to address issues with previous versions of Books Online.
Microsoft SQL Server 2012 Release Candidate 0 (RC 0) now uses the help viewer released with Microsoft® Visual Studio 2010 Service Pack 1 (SP1). Also, the SQL Server documentation is no longer included in the installation media, but must be either viewed online, or downloaded as a local help collection. For more information, see Use Microsoft Books Online for SQL Server.
The main sets of Microsoft SQL Server 2012 documentation in the new structure are:
Books Online for Microsoft SQL Server 2012 contains a smaller set of foundation content optimized for users who are searching for information about how to complete a task. This version of Books Online contains these main types of information:
Task topics that describe how to perform common tasks, such as how to create a cube or alter a table.
Feature topics that provide a brief description of the feature and a table of the common tasks required to use the feature.
Reference topics that describe the syntax of items such as command prompt utilities and languages, such as Transact-SQL and MDX.
Developer Reference for Microsoft SQL Server 2012, a set of content that contains the conceptual and reference documentation for programmers building applications that use the SQL Server application programming interfaces (APIs).
Installation for Microsoft SQL Server 2012, content describing how to plan and run a SQL Server installation.
Tutorials for Microsoft SQL Server 2012, a set of quick, guided walkthroughs of common SQL Server tasks. To view the initial set of Microsoft SQL Server 2012 Release Candidate 0 (RC 0) tutorials, see the Tutorials page.
Current plans are to provide a set of guides in the future. The guides will give prescriptive guidance and conceptual descriptions of SQL Server features and operations. The guides will be optimized for users seeking a more in-depth understanding of a feature, or to learn about areas of the product they have not used before.
The restructuring project is not complete; many feature and task topics have not yet been converted to their final forms. Later versions of the Microsoft SQL Server 2012 documentation will include further changes to the Books Online content, along with additional items such as the guides. For more information, see SQL Server Documentation Restructure.

Sync Framework未包含在SQL Server 2012 RC 0安装包中。可以从Microsoft下载中心下载适当版本的Sync Framework。

SQL Server 2012 RC 0 不支持重命名 SQL 网络名称资源。如果您使用 Windows 群集管理器重命名现有的 SQL 网络名称资源,则已重命名的群集实例的 SQL Server 升级或其他安装操作可能会失败。

支持 SQL Server 2012 RC 0 Evaluation Edition 的操作系统
在 Windows Vista SP2、Windows Server 2008 SP2、Windows 2008 R2 SP1 和 Windows 7 SP1 操作系统上支持 SQL Server 2012 RC 0 Evaluation Edition。

在此版本的 SQL Server 中,您可以试用新的产品更新功能。此功能将最新的产品更新与主安装相集成,以便可以同时安装主产品及其适用的更新。产品更新可以搜索 Microsoft Update、Windows Server Update Services (WSUS)、本地文件夹或网络共享以获得适用的更新。

对于此 CTP 版本,测试更新将不分发到 WSUS。在 SQL Server 2011 发布时,更新将可用于 WSUS 并且位于产品“用于安装的 SQL Server 2011 产品更新”之下。在 WSUS 管理员核准后,指向 WSUS 服务的任何客户端都将看到这些更新。对于此 CTP 版本,您仍可以通过从 Microsoft Update Catalog 进行导入,验证 WSUS 功能。为此,请按照下列步骤操作:
1.右键单击 WSUS 服务器内的“更新”节点,然后单击“导入更新”。
2.在“搜索”框中,搜索 SQL Server “2012 RC 0″ Test Update。
4.选择“直接导入 Windows Server Update Services”。

更改SQL Server 2012 RC 0 CEIP 设置,请转到:
1.在命令提示符下启动 SSMS 并连接数据库引擎。键入服务器名称并单击“连接”按钮。
2.选择菜单栏中的“帮助”–>“Microsoft SQL Server 客户反馈选项…”。

当您尝试在中文(香港特别行政区)操作系统 (OS) 的任何支持的 Windows 版本上安装升级顾问时,可能会发现指向安装升级顾问的链接未启用。
解决方法:在您的 SQL Server 2012 RC 0 介质的 \\1028_CHT_LP\x64\redist\Upgrade Advisor or at \1028_CHT_LP\x86\redist\Upgrade Advisor 处(取决于您的操作系统体系结构找到 SQLUA.msi 文件。

Developer Reference for SQL Server 2012
Microsoft SQL Server 2012 RC 0 发行说明 (zh-CN)
Microsoft® SQL Server® 2012 Release Candidate 0 (RC0)