We have just released rsyslog 4.7.0, a member of the v4-devel branch. This release offers Solaris support and also some fixes and enhancements. All the details you will find in ‘Rainer’s Blog’ http://blog.gerhards.net/2010/04/v4-devel-is-back-again.html
and of course in the Changelog.
As always, feedback is appreciated.