I like the “Ubuntu”/ISO-date naming conventions for releases. They tell how fresh a release really is. There is only one drawback. They omit the underlying Android version and the Andorid patch level and thus confuse users. Wouldn’t it be much nicer if releases would address the underlying Android version and its patch level?
Fake Examples
Fairphone OS 16.07 (Android 5.x.x@2016-07-05)
Fairphone Open OS 16.05 (Android 5.x.x@2016-07-05)
FP1 OS 16.07 (Android 4.4.x@2016-07-05)
Fake Code for the full release name
${FAIRPHONE_OS_NAME} ${YEAR_TWO_DIGITS}.${MONTH_TWO_DIGITS}.${MINOR_NUMBER} (Android ${ANDROID_VERSION}@${ANDROID_FULL_PATCHLEVEL})