Is more generous with talents, types and stat points for each level gained.
Birth stats remain unchanged.
5 stat points per level, up 2 from 2.
2 talent points per level ( 3 if a multiple of 5 ), 1 ( 2 ) up from 1 ( 2 ).
2 generic points per level ( 1 if a multiple of 5 ), 1 ( 1 ) up from 1 ( 0 ).
4(!) category points per instance at levels 10, 20 and 36 ( and for every 30 levels after if that's a thing ), up 3 from 1.
2 prodigies at levels 30 and 42 ( up from 1 ). Additionally, +1 prodigies every 50 levels ( so 5 total at 50, and 1 more every 50 levels thereafter ).

Primary Features:
Two new Archmage style classes; Arcanist and Elementist.
One new Enchanter class.
Some extra talents for Alchemist.
Lots of new artifacts.
Artifact gems are more interesting to attach to golems.
Crystal Focus/Heart items can be deconstructed to recover the gem.
Angolwen Academy: Get training in the Arcane here.
3 new runes.
Two new item types with unique egos: Ritual Blades and Wardstones.

Arcanist Features:
Like Archmage, but also starts with temporal, meta and nightfall unlocked, and no elemental categories.
Has two unique categories; High magic and Void magic.
Can also unlock Illusion, Distortion, Power and Morph.

Elementist Features:
Like Archmage, but only elemental categories.
Has three unique categories; Elementalism, Corrupted Elements and Elemental Fusion.

Enchanter Features:
Apply a variety of enchantments to your equipment.
Dabble in safe and unsafe hedge magic.
Defeat monsters with your prowess with a staff.

Archmage Features:
1 new category containing 8 arcane/elemental combo spells.

Alchemist Features:
Altered Alchemists Guild quest.
Two new unique categories: Poison Alchemy and Metal Alchemy.
They also get access to Mana Alchemy and Herbalism.