So last year in 10.5, 9.6.10, 9.5.9, 9.4.19, and 9.3.24 we had a binary ABI break that caused pglogical and other logical decoding plugins to break:
https://github.com/2ndQuadrant/pglogical/issues/183#issuecomment-417558313 This wasn't discovered until after the release so the release notes don't highlight the risk. Someone upgrading past this release now could diligently read all the release notes for all the versions they care about and would never see anything warning that there was an unintentional ABI break. I wonder if we shouldn't be adding a note to those release notes after the fact (and subsequent "However if you are upgrading from a version earliers than...." notes in later releases). It would be quite a pain I'm sure but I don't see any other way to get the information to someone upgrading in the future. I suppose we could just add the note to the current release notes on the theory that we only support installing the current release. -- greg
