Thanks for all the answers. We seem to have some kind of MDM in place. While I understand the "side-by-side" update technique, it seems a bit "fiddly" and doesn't alleviate the need to call up all the apps while in reach of a friendly/fast network and check all of them for actually having run through their updates successfully.
While EASA requires a lot of detailed paperwork/analysis to approve apps, such aspects seem to be of lesser importance (as is dubious in-app usability).