On late January, we are given a heads up about a new event called "Duel Island" coming this late February. Not much is revealed just yet other than what was written in the announcement, but looking the message, it won't be similar to previous events that happened before. The last part of the message seems to indicate that we will be dueling against other players' deck, possibly similar to how the Vagabond uses other players' deck.
Duelists from around the world
It could have something to do with pvp, since it's the only other feature that keeps a record of duels you've had against people from around the world. "Unlocking" regions give you some small rewards, and it is then saved in your history. You can view this by going to the PvP Arena building, and go to "PvP Results by Region" to see how many people you've dueled in certain regions.
A mysterious duelist that bears a striking resemblance to Jaden, the Vagabond is a figure that "represents" other players. He uses decks that other players have made, without the ability to use character specific skills, but you are handicapped by the challenge that is set for that duel. Although you can't save replays of Vagabond duels, dueling against him can be a good way to view decks that others have made. The new event could be somewhat similar to this feature since it might not be an online real-time duel like pvp.
Valencia 2days ago
Is this going to be just dueling the Vagabond while he uses decks from real players?
Thats for newbies alike, lots of veterans that already maxed everyone find vagabond as a challengeing NPC, sometimes frustating, sometimes a breeze. Already beat lots of vagabonds already incuding from 1 hand challenge.