Not saying it's applicable to this particular release, but...
Ruckus don't announce most of their security fixes, and they have also quietly refreshed release notes to declare security fixes weeks/months later. Quite a few 'boring' releases actually included critical security improvements.
Also... I maintain a change log of all Unleashed releases, updated usually a day or two after each release. You can get to it by clicking on the version number in my firmware guide, or a direct link is here.
