The script engine has been enhanced with new functions and even better performance. There is also a new plugin (imkmsg), which offers support for structured kernel logs. Special thanks to Milan Bartos, who contributed this module. The 7.1.5 version completes the core of enhancements to support lumberjack structured logging (but of course there will be more enhancements in the future).
RPM files for 7.1.5 can be found at http://www.rsyslog.com/rhelcentos-rpms/
As always, feedback is appreciated.