System Center Operations Manager R2 is now available: http://www.microsoft.com/systemcenter/operationsmanager/en/us/whats-new.aspx
While there a whole load on new features, we are really only just starting out on our SCOM journey here and the biggest plus point for me and my current custom Management Pack (for the BizTalk environment) is the ability to subscribe to specific alerts. This will hopefully make it so much easier for me to target particular events to user and support groups and also change the detail of the notifications they receive; something which has caused me pain to date.