Hi Jan,<br /><br />thanks for your fast answer.<br /><br />I found this vague statement "..<strong><em>possibly 2036</em></strong>" under:&nbsp;<a href="https://en.wikipedia.org/wiki/Linux_kernel_version_history">Linux kernel version history - Wikipedia</a><br /><br />A use case:<br />End of Service for medical devices can vary from 5 to 10 years.<br />If the End of Life of a medical device was announced in 2018 or later, it runs out of support (e.g. cyber security patches for linux kernel v4.4)<br />This then leads to expensive alternative measures.<br /><br />Again, thanks for clarification,<br />Michael