The Sorceresses of Diablo II will not be a featured class in Diablo III, but the Wizard character class actually come from the same mage clan originally, the Zann Esu female-only clan of the East.
A rebellious woman who has wrested the secrets of magic use from the male dominated mage clans of the East, the Sorceress is an expert in mystical creation ex nihilo. Though somewhat lacking in the skills of hand-to-hand combat, she compensates for this weakness with fierce combative magic for both offense and defense. Solitary and reclusive, the Sorceress acts based on motives and ethics inscrutable to most, and sometimes seems capricious and even spiteful. In reality, she understands the struggle between Order and Chaos all too clearly, as well as her role as a warrior in this battle.
The female mage clan of Zann Esu is one of the oldest of the ancient clans, although little is actually known about them. Centuries ago, the fourteen powerful covens of Esu witches convened for the first time in generations. What they discussed is not known, but the witches left behind their former lives and, as a group, disappeared into the Eastern Jungles.
The exact location of their community is a mystery. Until recently, their only contact with the outside world occurred during the recruitment missions. Once every seven years, the Zann Esu visited certain families across Sanctuary. These families had one thing in common -- they each had a seven-year old daugther. Always good-natured and polite, the Zann Esu visitors would meet the girls, ask a few questions, and then leave. A select few of the girls were visited a second time and offered apprenticeships. The families of those chosen enjoyed good fortune for many years after.
The Zann Esu, or Sorceresses as they are generally known, are on a quest for purity, the pursuit of the perfect magic. They feel the other disciplines of magic are haphazard, and have instead chosen to focus strictly upon elemental magic. They mold the base elements into whatever magical forms they need -- threatening all other magic disciplines with obsolescence. In order to achieve perfection in these elemental transmutations, they choose only those daughters of Sanctuary with the highest level of attunement to the magical elements.
The Sorceresses believe that it is through the search for perfection that they will attain ultimate purity and ascend to their destined role as the most powerful mages in Sanctuary. For centuries they have studied in secret, perfecting their art and bidding their time until the Emergence of Evil. Then, they will face their greatest challenge, either proving the purity of their magic or fading from existence.
The Zann Esu oracles have decreed that the time of the Emergence is at hand. The destruction of the Prime Evils is to be the great test of their clan. Recently, Sorceresses have appeared mysteriously throughout Sanctuary to do battle with the minions of evil wherever they are found.
Athletic, affable, and self-assured. Sorceresses hardly seem like scholarly bookworms hidden away from civilization. Sorceresses possess many of the same skills as the male members of the Eastern mage clans, but excel at the use of elemental magic. Like most mages, they consider melee combat vulgar and use magic almost exclusively to fight their enemies.
This is just part of the material available on this topic. The Diablo2Wiki Sorceress article is available in the Diablo 2 wiki, which has a specific Diablo I and Diablo II focus. A lot of information unique to the first two Diablo games is available there. You can find it here: