Sword 2 is having the Lunar New Year Event 2011 which was hosted in other editions about a month ago. Pose before the event NPC in Queen's Gate to get a key (1/day). It can open event boxes appearing in random maps for items such as Full Moon Rabbit, Bunny Band (30 days), Bunny Hat, Traditional Korean Costume, and Rose Wings. See Lunar Maiden forum topic.
There will also be some events for St. Patrick's Day. See St. Patrick's Day Festivities forum topic.
Login For Freebies: March 11-13, 2011
Login during the weekend and receive
According to Quinzel, this item can be used to create "high end gear such as Elite Albaes". Players sometimes dump whole Lv.84 elite items on the floor when their inventory is full due to all the roulette loot. And G1 is expecting people to craft such items?
Find the GM: March 17-19, 2011
During the event period, AMs (i.e. GMs) will appear in random maps. Find them while wearing something green (e.g. Elite Albaes!) and get 3 Green Rough Stones and 3 White Gold Bars.
PVP Event: March 18-20, 2011
The winner (1 per server per day) of AM-hosted PVP event will get ESN Code (6,400 Gold) and 1 Siren's Scale. See PVP schedule here.
Update: Green Dyes were replaced by Albaes Hat. White Gold Bars were added to Find the GM event.