We're starting to see more and more videos from the Warlords of Draenor Alpha. If by some chance you haven't bothered to type Warlords of Draenor Alpha into a youtube search, I'll include some here.
Olivia Grace from Wowhead has a good overview of the UI changes we've been hearing about:
And they've also got a quick preview of some of the new armor sets, which you can also see in more detail here.
MabusGaming has been putting out tons of videos from his stream with some good hunter play and the new dungeon:
Fatboss has a quick play-through of some support classes trying out the Bloodmaul Slag Mines dungeon:
You can also find several hunters on twitch live streaming. RogerBrown's twitch is here. Hopefully we'll be seeing more prominent hunter's in the alpha/beta soon.