After introducing InnoDB persistent statistics in MySQL 5.6, in this April Labs release we have dressed it up in a nice UI and refactored the internals a bit to make the code more elegant and straight-forward.
The persistent stats are now controlled globally and can also be overridden at table level, should any table require a different behavior.
The server global flag –innodb-stats-persistent (boolean) now controls whether all InnoDB tables use persistent statistics or not. Keep in mind that if a table is using persistent stats then its statistics will not be updated automatically and you are responsible for running ANALYZE TABLE periodically, whenever you think the table contents has changed too much. Thus the default for –innodb-stats-persistent is currently set to OFF.