We recently noted some of the changes to support for ConfigMgr 2007 over on our support team blog but I wanted to also mention one big AMT related change here:
AMT firmware versions 4.2 and 5.2 are supported on ConfigMgr 2007 SP1 and SP2
System Center Configuration Manager 2007 SP1 and SP2 now supports AMT firmware versions 4.2 and version 5.2 with a minimum revision of 5.2.10 with the out of band management feature for both in-band provisioning and out of band provisioning.
No software updates are required.
J.C. Hornbeck | System Center Knowledge Engineer