White paper on Operations Manager 2007 Cross Platform Extensions
Here's a good starting point on the features and functionality provided in the Cross Platform Extensions beta - https://download.microsoft.com/download/7/7/6/7762e198-cad4-4fac-9946-e8978e90823c/OpsMgr2007-CrossPlat-WP_CD_April2008.pdf.
Also the System Center team posted some additional information - https://download.microsoft.com/download/7/7/6/7762e198-cad4-4fac-9946-e8978e90823c/OpsMgr2007-CrossPlat-WP_CD_April2008.pdf
Here's a good video showing the product in action - https://edge.technet.com/Media/Operations-Manager-with-Barry-Shilmover/
More to come later...
The Cross Platf and Interop Team