SANITY_TESTED_DISTROS variable con poky.conf should be updated with current supported distros. The ideas is to set this activity as one more item on the Release checklist.
one other thing that could be done here is to prune the distros that are no longer supported from the Autobuilders as a result of this check.
I will be adding this to the release checklist as well.
This change will require a new strategy from QA team using public AB results, will be documented on wiki as soon as is ready.
Supported Distro already updated by Joshua Lock already merged on master http://git.yoctoproject.org/clean/cgit.cgi/poky/commit/?id=11af6595303389b5fc087718ceee4311c8249f74 New strategy to update supported Distros already documented on wiki https://wiki.yoctoproject.org/wiki/Distro_Testing_Plan