On page http://www.ubuntu.com/cloud it is stated that:

The main OpenStack releases are supported for a full five years on LTS releases of Ubuntu

And page https://wiki.ubuntu.com/ServerTeam/Cl... there is this graph:

What exactly does that promised support include? I could not find any spesific information on it.

Does that mean that Icehouse will receive security updates until 2019 (the end of Ubuntu 14.04 LTS support).

And Juno an Kilo would have shorted lifetime than Icehouse according to this, is this correct assumption?

(Background: I am intending to set up small cloud environment that would need to run for a long time. I really don't resources to upgrade Openstack to newer version often. Icehouse has all features I need so I could go with it if will be getting critical secrity fixes.)