With the upcoming release of System Center 2012 R2, Microsoft will be replacing the familiar SCOM agent with a new Microsoft Monitoring Agent which can be downloaded here.

The key feature being that the agent can operate in a standalone configuration, which generates an IntelliTrace file view-able with Visual Studio 2013 Release Candidate.or any other version of Visual Studio 2013.

It is worth noting that the current SCOM agent is not compatible with SCOM 2012 R2, the MMA agent is however able to connect to a SCOM 2012 SP1 and RTM management groups meaning it will be worthwhile to upgrade your agents ahead of your Management Group if you want to minimize monitoring downtime.

Marnix Wolf has created a table detailing the primary differences between the two agents here.