Last night at the SoE Fan Faire John Smedley announced the new game Sony has been working on and holding close to their chest, which surprisingly enough is fitting considering the new game is a card game.
Legends of Norrath:Oathbound is an MMO card and strategy game that is built into the EverQuest and EverQuest II clients. The first set has more than 350 cards. 60 card starter decks can be purchased for around $10.00 and 15 card booster packs can be purchased for around $3.00. All registered EverQuest and EverQuest II players will receive a starter deck for free at launch. Cards are tradeable with players from both games and the Legends of Norrath can be played across servers as well as across games. In other words a player from EQ can pit themselves against a player from EQ2.
Cards will also be incorporated into the game in the form of drops off mobs and they’re tradable. Some of the cards will have additional benefits/items associated with them such as unique mounts, buffs, weapon adornments, etc.
For a more in-depth description check out Kotaku's article here