Releasenotes of major Releases can be found on LCS. In order to review usefullness and impact of a monthly update content must be known. However at the moment only separate KB articles have a desciption of the content of it. The monthly update only states that it "Contains all application (X++) changes for the App Update 8.0.1 release." (for example), futher details like KB articles belonging to it (only title can be sufficient as a start) and short description of fixes where no separate KB article exists are needed.