WorldofWar.de has a brand-new ‘Skoll’ video preview from the EU PTR, which is the first video of this creature out there.
'Skoll' is the new, third Spirit Beast that can be tamed by beastmaster specced hunters in the upcoming patch 3.2 'Call of the Crusade'. It's a wolf with a great looking blue pelt with electric effects on it. The default spells are Spirit Strike, Prowl and Claw (along with Cower and Growl). The two spawn locations, which are known so far, are the Snowdrift Plains and the Foot Steppes in the Storm Peaks. It's a neutral level 80 elite beast (watch out for a yellow spot on the tracker).
You can see a video of this event here. Thanks nobbie!