It's funny how much we don't know about Draenor yet, considering we've not only had it as part of the setting since Warcraft II, but we've seen it in WCIII, the novel Rise of the Horde, and we even traveled to its shattered remnants for an entire expansion in Burning Crusade. Despite all that, the living world - the place that produced the orcish people, was home to a mighty ogre empire, gave birth to titanic beings like the gronn and sheltered the draenei for hundreds of years is still somewhat unknown to us.
We've seen bits and pieces of the unknown world drip out since Blizzcon, but it's all still so tantalizingly vague. Some of these lands are entirely new to us, as they were lost when Draenor became Outland, torn apart by Ner'zhul's use of the Legion's portal magics - lands like the Spires of Arak, home to the Arakkoa and the Frostfire Ridge, home to the Frostwolves and a land of glaciers and volcanoes - a land that typifies the nature of Draenor itself. The planet, or at least the one continent we have any details on, seems to be a land of violent extremes which breeds a harsh, survivalist mindset in its native children.
Make no mistake - the orcs are not the only race native to these harsh (some might even say savage) lands. The ogres sail north from another land to lay claim to Nagrand's coasts, make their presence and that of a tottering empire known even in the Frostfire Ridge, and behind them lurks the menace of the gronn. In the Spires of Arak, the proud Arakkoa burn those they capture alive in tribute to the sun. This is not a world where any live in peace - to live in harmony with nature on Draenor is to live a life of constant struggle, in a kill or be killed fight red in the shed blood of predator and prey.