A new profession was announced for GW2 today.. The Commando:
"A master of the battlefield, this elite soldier is equally at home on the mean streets of Lion's Arch, in the steamy Maguuma Jungle, or on the Orrian front. The multi-role commando is a combat medic, an infiltrator, and a tank. By land, sea, or air, the commando is a technological force to be reckoned with. Come get some."
More about it and skill videos can be found at
http://www.guildwars2.com/en/the-game/professions/commando/