1. ConfigMgr 2012 SP1 includes many new features such as support for Windows Server 2012, Windows 8, SQL Server 2012 SP1, and Mac, Linux, and UNIX clients. It also includes expanded hierarchy capabilities and support for virtual environments.
2. Upgrading to ConfigMgr 2012 SP1 requires downloading prerequisites, upgrading SQL Server, installing updates, backing up databases, testing the database upgrade, and installing SP1 on the site servers.
3. After installing SP1, it is important to perform health checks, backup the database, test functionality, deploy updated clients and content, review and update task sequences, and install any post-SP1 hotfixes.