need a web/wiki page about release branches and their status
Should have page that explains edge/v2.* and their status.
E.g something with info like:
edge: rolling release. gets unstable updates.
v2.3: stable, gets bugfixes and security updates. supported until v2.5 released.
v2.2: security fixes only. support ends X.X.XXXX.
v2.1: updates on request only. build environment will be decommissioned X.X.XXXX.
(from redmine: issue id 1011, created on 2012-02-24, closed on 2012-05-31)