Part of today's Guild Wars 2 update includes the WvW mount, the Warclaw. Players can start the unlock process for the Warclaw "by spending WvW Ability Points" in the newly added Mount Mastery. Once Mastery Track Rank One is complete, "the collection will unlock and you will be able to start working on earning your mount". It comes with some nifty WvW-specific skills to including Evade, Battle Maul and Chain Pull.
Todays updates fix a number of bugs and features some significant class changes across the board. Each profession has a bit of an explanation for an overview above a long list (in some cases) of changes that have been applied.
It's well-worth the time and effort to go check out the Guild Wars 2 forum for the patch notes to see how your favorite profession has been changed.