Barbarian Paths!!

I was wondering why the totem warrior paths aren't available to look at? And I've also heard of elk, tiger, and t-Rex primal paths. Can you elaborate on that? Also dex based barbarians would be a good idea. More agile and less tanky. 

Since for the beta test only the material the Basic Rules and the SRD is available, here there is only the Berserker Path.

I think you just need to drop your greataxe and pick up the shortsword. Same but use light/medium armor and use finesse/ranged weapons.