Guild Wars 2 Warrior Preview and Traits Overview

ArenaNet's official Guild Wars 2 website has been updated with new information and media for the warrior profession, as well as an overview of the game's trait system. A bit on how traits work:
You acquire traits by completing profession challenges scattered throughout the world. For instance, you walk into an inn and persuade a shadowy stranger into telling you a rumor about a mysterious tome full of arcane knowledge. Or you challenge a legendary swordmaster to a duel while exploring Divinity's Reach.

Each profession focuses on different activities to develop his or her traits. Warriors train physically, bash stuff, eat stuff, and drink stuff. Elementalists, on the other hand, seek ancient knowledge locked in tomes or particularly powerful elemental locations. The different trait challenges accentuate the unique feel of that profession and really bring the experience of playing that profession to life.

Your prowess will grow as you complete challenges that develop your character's particular traits. The defeated swordmasters will teach you their age old techniques, allowing you to select the Swordmastery trait. Discovering the mysterious tome will allow you unlock the secrets of magical energy.