We will be rolling out some new features as we get closer to 5.0 (mid Aug).
I've added one such feature now: Zimbra/OS Version & Zimbra Components. This will help us to troubleshoot your issues better without asking the inevitable "Which Zimbra version are you using?"
To update your information, please edit your profile (it's at the bottom).
On the zmcontrol -v ; be sure to paste the whole string, as this will make it easier to track down bugs within a specific build.
If you are don't have access to the command line, you can run the following search in zimbra:
I'm gonna pick a couple of users who update their profile to send some cool Zimbra swag to!