While every Class will have 3 Ascendancy Classes, the Early Access will start with two Ascendancy Classes. For the Monk, you can delve into more Elemental Damage with Invoker, or tamper with dark magic and become an Acolyte of Chayula.
Invoker
Specialize in the elements, inflicting ailments on enemies and empowering your skills.
Invoker Passives
...and Scatter Them to the Winds
Grants Skill: Elemental Expression
Trigger Elemental Expression on Melee Critical Strike
Create waves of Elemental Damage when hitting an enemy with a Critical Strike.
Faith is a Choice
Grants Skill: Meditate
Channel for a short duration to double your Energy Shield.
I am the Blizzard...
Gain 10% of Damage as Extra Cold Damage
On Freezing Enemies create Chilled Ground
I am the Thunder...
Gain 10% of Damage as Extra Lightning Damage
25% chance on Shocking Enemies to create Shocked Ground
...and I Shall Rage
Grants Skill: Unbound Avatar
When you apply Elemental Ailments to enemies, gain Unbound Fury. Once you have enough, transform into an Avatar, dealing more damage and inflicting more Ailments.
Acolyte of Chayula
Embrace the Darkness
Remove all Spirit
Base Maximum Darkness is 100
For each Life or Energy Shield lost to Damage, reserve 1 Darkness instead if possible
Darkness Reservation lasts for 10 seconds
+5 Maximum Darkness per Level
Grasp of the Void
Gain 1% of Damage as extra Chaos Damage per 20 Unreserved Darkness
Chayula's Gift
+10% to Maximum Chaos Resistance
Chaos Resistance is doubled
Ravenous Doubts
Mana Leech is instant
Consuming Questions
You cannot Recharge Energy Shield
Mana Leech effects also Recover Energy Shield
Waking Dream
Grants Skill: Into the Breach
Flames will periodically spawn on the ground from the Breach dimension. Step over them to gain life/mana/damage.