Version 4.11.0 of #syslog_ng was released yesterday. I submitted changes to the #FreeBSD ports maintainer, but if you are impatient, you can already try this syslog-ng version from my test repo:
The main new feature is a #Kafka source.
Installing a syslog-ng 4 development snapshot on FreeBSD
Unless there is a serious problem, FreeBSD ports usually contains the latest stable syslog-ng release. However, sometimes people want to compile a git snapshot to test a new feature or bugfix. To do that, one way is to generate a syslog-ng release tg...