Last week Microsoft Exchange team released the Exchange 2013 Management Pack for compatible with SCOM 2007, and SCOM 2012.
The Management Pack contains about 75 monitors that cover Exchange component health (such as Hub Transport health), customer touch point health (such as “is OWA working”), clustered scenarios, as well as dependencies monitoring (“is Active Directory healthy”). Monitoring covers primarily availability and performance scenarios
If you look at the Management Pack in some tool like MP Viewer, you will discover that there are not 75 monitors in the Management Pack. This is because the Management Pack has logic to dynamically determine the set of monitors by communicating with the built-in monitoring features of Exchange.
PRO: The CE (Correlation Engine) is no longer among us!, each monitored Exchange server is responsible for monitoring its own health, and simply reports this via the Operations Manager agent.
CON: No Perfomance Collection [mailbox count, mailbox sizes], No Reports
You can find the TechNet blog post here, the Management Pack here and the guide here. The guide walks through the details of deploying, configuring and using the Management Pack.