The official patch notes can be found, HERE
February Events
Revenge of Belphegor
- Event will run from 1/30 until 2/09 KST
Roulette Event
- Event will run from 1/30 until 2/13 KST
It's important to note they have removed how many times you can spin per day (Still limited on Spins you can collect)
Spin Coin Missions:
- 5x Arena Attempts = 2 Spins
- 1x Login = 1 Spin
- 1x CD Clear = 2 Spins
Erebos Invasion
- 1st Event held on 1/31, 19:00-21:00 KST
- 2nd Event held on 2/07, 19:00-21:00 KST
Double Ruby Rewards
- Event will run from 2/03 until 2/09 KST
During the event your rankings in World Boss and Arena (Masters & Champion) will reward you with 2x the Ruby Reward.