What you read here is not final or official. It's information from leaked patch notes so take it with a grain of salt.
Mechanics
Initiative Regeneration increased from .6 -> .667 per second
Initiative Regeneration increased from 2 every 3 seconds to 3 every 4seconds.
Dagger
Death Blossom: Now costs 4 initiative
Wild Strike – Gain 10 Endurance with a successful strike.
Lotus Strike – Removed Weakness. Added 2s Poison.
Shortbow
Cluster Shot -> Increased max targets from 3 to 5 on the full bomb. Separate clusters remain at 3 targets.
Disabling Shot: 2s->3s Cripple
Sword
Pistol Whip: 1/4 second stun is now 1/2 second. Second half now has evasion.
Tactical Strike: 1s Daze->2s Daze; can move while using this
Crippling Strike: Added 2s Weakness
Infiltrator’s Strike: 2 init->3 init. Added 1s Immobilize
Flanking Strike: removes 1 boon
Heal
Signet of Malice: Increased the passive heal by 30% Decreased the active heal by 25%. Reduced the cool down to 15s.
Utility
Infiltrator’s Signet -> Moved to Tier 1
Signet of Agility -> Moved to Tier 2
Venom duration decreased from 45 seconds to 30 seconds.
Elite
Daggerstorm: now gives 8 seconds of stability.
Traits
Assassin’s Reward Base heal at level 80: 50/init->70/init
First Strikes – 10%% increased damage when Initiative is over 6.
Leeching Venoms: Damage no longer scales with the Healing attribute. Now scales with level only.
Mechanics
Initiative Regeneration increased from .6 -> .667 per second
Initiative Regeneration increased from 2 every 3 seconds to 3 every 4seconds.
Dagger
Death Blossom: Now costs 4 initiative
Wild Strike – Gain 10 Endurance with a successful strike.
Lotus Strike – Removed Weakness. Added 2s Poison.
Shortbow
Cluster Shot -> Increased max targets from 3 to 5 on the full bomb. Separate clusters remain at 3 targets.
Disabling Shot: 2s->3s Cripple
Sword
Pistol Whip: 1/4 second stun is now 1/2 second. Second half now has evasion.
Tactical Strike: 1s Daze->2s Daze; can move while using this
Crippling Strike: Added 2s Weakness
Infiltrator’s Strike: 2 init->3 init. Added 1s Immobilize
Flanking Strike: removes 1 boon
Heal
Signet of Malice: Increased the passive heal by 30% Decreased the active heal by 25%. Reduced the cool down to 15s.
Utility
Infiltrator’s Signet -> Moved to Tier 1
Signet of Agility -> Moved to Tier 2
Venom duration decreased from 45 seconds to 30 seconds.
Elite
Daggerstorm: now gives 8 seconds of stability.
Traits
Assassin’s Reward Base heal at level 80: 50/init->70/init
First Strikes – 10%% increased damage when Initiative is over 6.
Leeching Venoms: Damage no longer scales with the Healing attribute. Now scales with level only.