Arkana appears in Duel Links as mentioned, as the next major event character.

His Dark Magician, the infamous “red” Dark Magician, gets its own summoning video.

While 3 cards you can pick up from Dueling him are confirmed:

• Dark Magician (Arkana Version)
• Dark Eradicator Warlock
• Anti-Magic Arrows

Further details will be noted as they become available.