[Updated] v.161 - Black Heaven: Final Chapter Update Notes

5/6 - 6/2 Ikura Rising
Gives exp coupons and Grand Adventure Ring (15% crit, 5% min crit, tradeable once in account). This is the same ring that was given out for revamped Cygnus Knights and later Resistance at level 130. Can "Ikura" be a new class? Or a codename for Beast Tamer re-release maybe?

a quest regarding the Ikura monster designed by Eunwol from the Design-A-Monster contest and some more Cake vs. Pie rivalry (but it seems like it's just some kill xx cake/pies quests).
Ikura mob:
The mob says "So this is Maple World!" and it has a fixed damage of 101010 and has an HP of 50505000.
Original: https://www.youtube.com/watch?v=N4b7MgzSbDg#t=2m18s

It's a mob that will spawn everywhere.