It’s an event server
Described as an event server, Speed Acadia will be open for a week to allow players to quickly level up their character with extra EXP. During this period, a level-up event will be held which will also provide special rewards such as an Armor Set, Wing, Weapon, and more as level milestones are hit to enhance gameplay.
According to the accompanying press release, you can receive gifts like Elite Healing and Mana Potions, Bless of Light, Jewel of Chaos and Creation, and much more. In order to receive the gifts, all players need to do is play on the new Speed Arcadia Server and accumulate play time. Simple, right?
If you like, the team notes that a free server transfer coupon will be available for all players and can only be used to transfer to the new Arcadia server (opening March 31). When transferring to Arcadia, players will have the corresponding level they achieved on the speed event server. According to the level achieved, rewards such as vault expansion, Skeleton Ring and Pet, or Guardian Elf Muun and Gold Channel Ticket will be given to players.