The publishing history now lets you compare pages in any version of the published content with the corresponding page in any other version. Several of our customers had asked for this to be made possible.
In more detail, determining the changes that were made to a page within a specific period of time can now be easily accomplished using the new “Compare from here” and “Compare up to here” context menu items of the published versions concerned.
For further details, see the documentation on Restoring Content Using the Publishing History.