Replacements
Black Guard, Divine Champion, Doomguide, Eldrich Knight, Favored Soul, Harper Agent, Monk, Neverwinter Nine, Paladin and Shadow Thief of Amn have been removed.
The Knight of the crown has replaced the Paladin for all intents and purposes
The Knights of the Sword have replaced the Divine Champion classes for all intents and purposes (good only)
The Knight of the Rose has replaced the Neverwinter Nine class for all intents and purposes
The Kight of the Lily has replaced Black Guard class for all intents and purposes
The Kight of the Thorn has replaced Eldrich Knight class for all intents and purposes
The Knight of the Skull has replaced the Divine Champion classes for all intents and purposes (evil only)
Changes
The Warlock Class is a Renegade by default. The source of their magic is neither the moons nor the gods, therefore they are renegades.
The Sorcerer class walks a fine line at this point in the history of Krynn. Technically we should remove the class but it is possible some few may discover the powers of primal sorcery. They will most likely come into conflict with the orders of high sorcery if they master the art to any significant degree though. Just remember that sorcerers are not dragon born or anything like that on Krynn. A sorcerer draws her power from the ambient magic that exists everywhere as a leftover of the forces that created the very cosmos. No special bloodline is required to develop the powers of sorcery.
Arcane Scholar of Candledeep is now simply Arcane Scholar
The Shadow Dancer's Hide in Plain Sight ability has been moved to 5th level instead of 1st level
Additions
Kender Handler has been added and is very similar to the Shadow thief class except that it requires the character to be a Kender and gains hide in plain sight at level 2.
The Red Wizard has been replaced by the Wizard of High Sorcery class (note: you will need to specialize at level one to take this class, however the class itself is not required to join the orders of high sorcery).
The Wizard of the White Robes, The Wizard of the Red Robes and The Wizard of the Black Robes Classes will be added and built from scratch.