On a full upgrade, I got told the following would be removed -
akonadiconsole akregator kde-standard kdepim kdepim-addons
kdepim-themeeditors kmail libkf5mailcommon5abi2 libkf5messagecomposer5abi1
libkf5messagecore5abi1 libkf5messagelist5abi1 libkf5messageviewer5abi1
libkf5templateparser5 libkpimimportwizard5 mbox-importer pim-data-exporter
That didn't seem like a good idea, so I declined.