The focus of the latest guild missions coming to Guild Wars 2 is a simple one — to provide the guilds with something to stir away their idleness. The February update will include a new feature and a guild mission system that includes unlockable missions through the guild tech tree: Guild Bounty, Guild Challenge, Guild Rush, Guild Puzzle, and Guild Trek. The missions, Rivera says, are tailored to groups.
Mission completion earns players Guild Merit currency that unlocks new guild upgrades through an expanded unlock system. Upgrades consist of banner combos, reduced waypoint costs and new missions.
Flame & Frost: The Gathering is scheduled for the 26th, and you can read more about it over at Rivera’s blog.
Source. Guild Wars 2