Wow, that sounds cool, Blizzard really do seem to be adressing all the bad things that other MMOs have suffered from, and this kinda class/race specific epic storytelling is what other MMOs have lacked.
Heres a bit more Troll stuff:
-The Frostmane Trolls, (probably a tribe of Ice, rather than a new tribe, or renaming, like Darkspear is a tribe of Jungle), once ruled over the frigid lands of Dun Morogh, only to have their empire fall to Dwarven armies. These tribal creatures were driven to the hills in retreat -- a shameful blow to their warring nature. With King Magni’s forces split between the Alliance Wars and quelling the Trogg invasion, the Frostmane Trolls have seized the opportunity to reclaim Dun Morogh in an attempt to restore the kingdom that crumbled under Dwarven might ages ago.
-The Jungle Trolls are dark, superstitious creatures who revel in the hunt and the rigors of personal combat. In ancient times, the Jungle Trolls reigned over the lands south of the Redridge Mountains. Though their glorious kingdoms have since fallen to ruin, they seek to reclaim the dark majesty of their former empire. Equipped with voodoo magics and unparalleled combat skills, these Trolls have become relentless in their efforts to reclaim their jungle homeland.
And this page is absolutle great:
http://wow.warcraftstrategy.com/lore_trolls.php -
Overview
Trolls are one of the most barbaric native species in the world of Azeroth. They are also one of the most diverse. With at least 4 races of Trolls known (Dark, Ice, Forest, Jungle) and a 5th that has been mentioned (Desert), but never confirmed, you can find a race of Trolls anywhere on Azeroth. Two of these Troll races have allied with the Horde at some point in time. During the Second War, it was the Forest Trolls of Zul'Aman. At present, the Jungle Trolls of the Darkspear Tribe are the Orcs' allies and have been since the start of the Third War.
Dark Trolls
A race known to live underground and in caves, Dark Trolls are very primative and extremely brutal. They are the largest and the rarest of the different Troll species. They could even be considered nocturnal since they come out mostly at night for their hunts. Pure strength is the most revered trait of Dark Trolls. Their shamans practice voodoo and spirit magic similar to their Jungle Troll cousins. Recently, much of the Goblins' inventory has been supplied by the Dark Trolls' pirate raids on the caravans travelling through Ashenvale Forest and Felwood.
Ice Trolls
Ice Trolls prefer cold and frigid environments, most notably the mountains of Dun Morogh and the continent of Northrend. The Frostmane tribe once had a great empire over Dun Morogh, which makes them one of only two Troll species to ever have a truely unified empire. However, this empire fell when the Dwarven armies invaded and claimed Dun Morogh and all of Khaz Modan as their own. This defeat had a horrible affect on morale as they, like all Trolls, are a war-like species. Now scattered throughout the hills of Dun Morogh, the Frostmanes wait for the right time to strike at the Dwarves to reclaim their kingdom. This makes the current world events seem very fortuitous to the Frostmanes as the Dwarves are now dealing with new archelogical endeavors as well as fending off a Trogg invasion.
Forest Trolls
This race of Trolls is found in the most obvious of places, forests. Namely the forests of Lordaeron. They show a strong hatred for all other races. Most of their hatred is geared towards the High Elves of Quel'thalas. The Forest Trolls had lived in Zul'Aman for several thousand years before the Great Sundering. Soon after the Great Sundering the high-borne survivors of the Night Elves that were outcast landed on their shores claiming them as their own and founding Quel'thalas. War ensued between the two races for a considerable amount of time.
World of Warcraft Lore
In order to gain the upper hand after years of the struggle, the High Elves made an agreement with the Humans of Lordaeron (who at the time were under the flag of the Arathor Emprie). They would teach the Humans their arcane magics if the Humans would aid them against the Forest Trolls. This led to many defeats for the Forest Trolls and they became desperate. Holding out for as long as they could, one day fate went in their favor. The Orcs had come to Azeroth by way of the Dark Portal. After winning many battles in the nation of Stormwind, the Orcs moved north. In an attempt to turn the tide against the High Elves, the Trolls allied with the Orcs after seeing their formidable might. This is a rarity for Forest Trolls as they only ally with others when a greater enemy can be destroyed.
World of Warcraft Lore
Although this alliance between the Orcs and Trolls did help their cause, ultimately the Second War was lost to the Alliance. The Forest Trolls no longer seeing a benefit of staying with the Horde left the Orcs to rot in the Human controlled internment camps.
Little is known about the Forest Trolls' current plans and most assume they have gone back to their barbaric, tribal ways. Now that the High Elven kingdom of Quel'thalas is gone and controlled by the Undead, the Trolls may have little hope of gaining back the ancestral land that is rightfully theirs. Along with losing their land, they have lost all chances of establishing their own kingdom, something they have wanted for many millenia.
Jungle Trolls
Before the First War ever began, even before the Quel'dorei invasion of the Forest Trolls lands...the Jungle Trolls of Stranglethorn Vale maintained and empire that covered the southern reaches of Azeroth. This great empire was no fluke as they are easily the most civilized species of Trolls. However, their great empire has fallen long ago for as of yet unknown reasons. All Jungle Trolls seek a common goal to reclaim their lands and reforge their mighty civilization.
Within their current social structure, tribes are all lead by the most powerful warriors and bloodlines are strongly held on to. The laws and traditions of the Jungle Troll tribes are watched over and enforced by their Witch Doctors and Shadow Hunters. All matters will take into consideration the honor of the inividuals, the family, the tribe, and the troll species as a whole. Those deserving punishment may be ritually scarred or worse; however, this is always secondary to the loss of honor.
A unique aspect of the Jungle Trolls is their use of voodoo magics. When a Troll dies it is given power over a certain aspect of nature...such as plants, animals, storms, etc. When the Witch Doctors cast spells it is said the spirits of past Trolls are aiding them. Witch Doctors adorn themselves with elaborate outfits and painted symbols when performing one of the many lengthy rituals of the Junlge Trolls. There is a ritual for almost any conceivable event.
With their honorable and proud ways, the Jungle Trolls are a great addition for the new Horde. While escaping the internment camps of the Humans, Thrall and his Orcs crashed on some islands near Kalimdor and the Maelstrom. There he found the Troll, Sen'jin, who lead a band of isolated Jungle Trolls. After dealing with their Human pursuers, a band of Murlocs rose and took them all prisoner. They were to be sacrifices for their evil goddess, a Sea Witch. After breaking free of their prison, Thrall escaped with his Orcs and several of the Trolls from the island. However, in the final battle with the Murlocs, Sen'jin lost his life.
Taking these Troll refugees with him the rest of the way to Kalimdor, Thrall begin a new alliance with Trolls. The rest of the Darkspear Tribe lived on the Echo Isles. After the Battle of Mt. Hyjal, Thrall set to work on founding the new Orc nation of Durotar. A new peace had been brokered with the Humans lead by Jania Proudmoore living on Theramore Isle. This peace did not last for long. A new Human threat had been seen landing on the shores of Durotar...
In addition to this raiding party, an armada attacked the Echo Isles and the Darkspear Tribe of Trolls lead by Vol'jin, who had to be evacuated to Orgrimmar. The Orcs helpfulness in the Trolls time of need only solidified their alliance, and engraved upon the Trolls the new enemy they had in the Humans. What is to come next in the Horde's plight is unknown.