At some point 9.6 won't get security patches and bugfixes anymore as far as I understand. That alone is a reason not to fall too far behind with upgrades. Ther

At some point 9.6 won't get security patches and bugfixes anymore as far as I understand. That alone is a reason not to fall too far behind with upgrades. There is lots of new stuff regarding declarative partioning and parallel queries. If any of that seems useful to you those are big new features. There have been lots of small performance improvements that add up, and also the long requested change to CTEs as omptomization fences. I'd probably just scan the release notes for 10-13 and see if anything particular hits a pain point you're having.