Hi all,
I've spent a couple of hours hacking together a script that generates a report around which versions of each LAVA component is deployed, and also how many revisions have not been released. You can see it here:
http://validation.linaro.org/deployment-report.xhtml
It's updated every hour from cron, or you can run bin/make-deployment-report as instance-manager on control to update it.
It's a bit held together with sticky tape in places, but I hope it will be useful.
Cheers, mwh