Openstack’s new version Icehouse was released with the new Ubuntu 14.04 LTS on 17th of April.
Trove (Database as a service) package was added to Openstack with this version. Check Trove here: https://wiki.openstack.org/wiki/Trove
As far as I read in the release notes, there is no major change on other services. I will install the new version and write about it in the future.
Check the release notes: https://wiki.openstack.org/wiki/ReleaseNotes/Icehouse