http://www.diablofans.com/news/48145-2-1-ptr-patch-datamined-2h-weapon-changes

7/18 Update - Undocumented Changes

• Electrocute - Chain Lightning drop off damage on jumps appears to be significantly lessened/removed.
• Blizzard - Lightning Storm changes damage type to Lightning.
• Blizzard - Apocalypse changes damage type to Fire
• Energy Twister now originates at your mouse cursor on cast.
• The Swami makes your damage buff stacks from archon last for 12 seconds after archon ends (the unique effect datamined below).

Wizard

• p1_ItemPassive_Unique_Ring_942 - The damage bonus from kills while in Archon form now lasts for {VALUE1} seconds after Archon expires.

Spectral Blade

• Thrown Blade : Now changes damage type to Lighting.

Wave of Force : Now deals 390% weapon damage (up from 351%).

• Static Pulse : Has been fully changed: Each enemy hitrestores 1 Arcane Power. / Wave of Force's damage turns into Lightning.
• Heat Wave : Now Increases damage to 475% weapon damage (up from 427%).
• Arcane Attunement : Now increases damage by 4% per enemy hit (up from 2%).
• Debilitating Force : Now reduces enemy damage by 20% (up from 10%) for 4 seconds (up from 3).

Electrocute

• Forked Lightning : Now changes damage type to Fire.

Energy Twister

• Mistral Breeze : Now reduces cost to 25 Arcane Power (down from 28).
• Wicked Wind : Now deals 835% weapon damage (up from 743%)..

Explosive Blast : Cooldwon reduces to 3 seconds (down from 6 seconds).

• Time Bomb has been removed and replaced with Flash : Reduce the cooldown of Explosive Blast to 3 seconds. / Explosive Blast's damage turns into Lightning.

Blizzard : Now deals 1075% weapon damage (up from 910%).

• Unrelenting Storm : Now deals 1810% weapon damage (up from 1360%).
• Stark Winter has been removed and replaced with Apocalypse: Increase the area of effect of Blizzard to a 30 yard radius.
• Grasping Chill has been removed and replaced with Lightning Storm: Enemies affected by Blizzard take 20% increased damage from Lightning.
• Snowbound : Now reduces cost to 10 Arcane Power (down from 13).
• Frozen Solid : Now has a 100% chance (up from 40%) to freeze enemies for 2.5 seconds (up from 1.5).

Magic Missile

• Conflagrate : Now reads that only your other spells refresh it, not all your fire damage.

Disintegrate : Now deals 390% weapon damage initially (up from 360%), increasing by 250% (up from 100%) per second, up to 890% (up from 860%).

• Convergence : Now changes damage type to Fire.
• Entropy : Now deals 435% weapon damage initially (down from 465%), increasing by 350% (up from 145%) per second, up to 1115% (down from 1190%).

Ray of Frost : Now deals 430% weapon damage initially (up from 380%), increasing by 450% (up from 115%) per second, up to 1240% (up from 955%).

• Sleet Storm : Now deals 300% weapon damage initially (up from 285%), increasing by 220% (up from 90%) per second, up to 740% (up from 735%).
• Black Ice : Now deals 1625% weapon damage (up from 756%).

Arcane Torrent : Now deals 400% weapon damage initially (up from 370%), increasing by 305% (up from 105%) per second, up to 1010% (up from 895%).

• Power Stone has been removed and replaced with Statis Discharge: Each missile explodes into 2 piercing bolts of electricity that each deal 150% weapon damage as Lightning.

• Death Blossom : Now increases damage by 640% weapon damage (up from 370%) per second up to 2495% (down from 3065%).

Black Hole : Now deals 700% weapon damage (up from 360%).

• Supermassive : Now increases damage to 1290% (up from 570%).
• Blazar : Now deals 725% weapon damage (up from 464%) with the explosion.