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.
How to scale your SCCM infrastructure for third-party patching, remote client operations, and application management via a single plug-in ?
SCCM ConfigMgr Technical preview 1910 – Client diagnostic actions
SCCM Collection–how to identify devices that have old AD system discovery timestamp ?
Check Microsoft office activation status using SCCM Compliance Settings