With the Release of SCCM Configmgr 2012 SP1 RTM,When you deploy Secondary Site from its Parent site ,it will install SQL Server Express 2008 R2 Service Pack 1 (SP1) but as you can see from below snap (SQL server Requirements),the minimum required cumulative update is CU6 which you will have to install it manually.
SCCM Configmgr Report for Boundary group relationships with Fallback Sites
SCCM Configmgr Powershell script to remove the Maintenance Window on list of collections
Could not enroll iOS devices to SCCM Configmgr Hybrid environment
How to check who executed SCCM Configmgr reports for auditing or troubleshooting purpose