Updates are dependent on the database in use and the implementation differs.
eBiss 3 is now in its seventh year of development and has seen a total of 164 revisions as of 05/01/2022. (See eBiss Release Notes)
This question always arises when you want to keep a system as up-to-date as possible but want to minimize the effort. The author recommends an assessment of the situation every quarter or when there is a current need due to new functionality or bug fixes.