That's right Sacred Stone Scramble has had an overhaul. Work together with your race in order to win bosses. For every 1000 pos you and your race earn a random boss that will spawn 5 minutes after the event ends.
Rumour has it that it's Macheonru's intention to ruin the war for those who manage to take pos from the sacred stones.
Also in this update
Hoarde Shanis has had a bump in stats positioning them between cyclone and Blg as an alternative monster.