The Software Update detail view shows specific information about any particular patch needed in the environment. You get to this view by clicking on any particular update link from the Software Update view.
There are two things this view really gives us: a view of all devices missing this patch, and the ability to assign the patch to all present (and future) devices that may need it.
The reporting aspect of this view is really helpful. "Deploy to all requesting devices" will automatically set this patch to be installed on any device that needs it now, and any device that ever asks for it in future.