I’ve made a round of syslog-ng releases in the last couple of weeks.
From these 3.0.10 and 3.1.4 are quite similar, as they carry the almost the same set of bugfixes, which you can find in the respective changelogs. 3.2.2 is however different, it is a slightly larger update, as the 3.2.x branch of syslog-ng is the most recent. I’m quite happy how the 3.2.x beta period went, as the bugs found since the initial 3.2 release were not at all earthquakes: although they certainly affect some people, those are mainly in the newly introduced functionality (e.g. the correllation engine), the basic functionality of syslog-ng remained quite stable. And considering the size of the 3.1 -> 3.2 update, this is a result on its own.