In an upcoming build of Shadowlands, several changes have been made for both of the DPS Shaman specializations.

One quick note before discussing the specific changes to each spec, Searing Totem is being removed as a baseline button to all Shaman. Searing Totem was brought back in Battle for Azeroth with the intention of Totems being a cool and iconic part of the Shaman class, but without significant redesign to the button to give it mechanical interaction and feeling impactful to press, it wound up feeling like just another cooldown you had to manage that didn't have any excitement behind it.

•  Fulmination has been changed to be a guaranteed proc from Lightning Bolt and Lightning Bolt Overload.
•  Chain Lightning has been decoupled from Fulmination entirely, but still grants Seismic Thunder stacks.
•  Earthquake's base damage has been reduced significantly, but Seismic Thunder now also increases the damage of Earthquake for each stack of Seismic Thunder consumed when cast.
•  Fire Elemental's previous interaction with bonus Fulmination proc chance has been redesigned. While Fire Elemental is active, the period of Flame Shock is reduced, which increases the DPS of any active Flame Shock debuff and also increases the chance of gaining the Lava Surge effect. Additionally while Fire Elemental is active, any newly cast Flame Shock will have its Duration increased by 100%.
•  Lightning Shield will now grant the Shaman a charge of Fulmination when it deals damage to an enemy.
•  Echo of the Elements no longer grants a second charge of Healing Stream Totem for Elemental Shaman. This is more of a bug fix, but noting here as it is a moderate change to available utility of the Echo of the Elements talent. This talent is unchanged for Restoration.

The changes above should make Elemental Shaman feel quite a bit more control over what will happen as the result of pressing their abilities.

•  Rockbiter has been removed from the spec.
  ** This is a big change we're trying out. Rockbiter in Shadowlands basically only serves as a GCD filler. With the removal of Maelstrom, and Flame Shock and Frost Shock becoming class-wide abilities that are also on a short cooldown to fill empty spots, there was a lot of competition in the ~6 sec cooldown space of available buttons. Without Maelstrom, Rockbiter didn't have any strong interaction with the rest of the Enhancement toolkit, and shock spells are much more iconic to Shaman. This is an experimental change, please try things out in combination with the changes below and let us know how things feel.
•  Lava Lash is now learned at level 11, down from level 22. Base cooldown increased to 18 sec (was 12 sec)
•  Lava Lash now gets upgraded at level 22 to have its cooldown reduced to 12 sec (was 18 sec)
•  Stormstrike's cooldown has been reduced to 7.5 sec (was 9 sec)
• Maximum Maelstrom Weapon stacks have been increased from 5 to 10.
• Each stack of Maelstrom Weapon now grants increased damage and/or healing to the abilities Maelstrom Weapon effects in addition to the cast time reduction.
• Abilities that are altered by Maelstrom Weapon have had their baseline damage or healing values reduced.
•  Stormbringer no longer causes your next Stormstrike to not incur a cooldown.
•  Feral Spirits now grants one stack of Maelstrom Weapon immediately when pressed, and an additional 5 stacks over the duration of Feral Spirits.
• Each target that you hit with Chain Lightning now both increases the damage of, and reduces the cooldown of your next Crash Lightning.
•  Windfury Totem radius increased from 12 to 30 yards.
•  Windfury Weapon and  Flametongue Weapon no longer require you to click the button, then click a weapon on your character sheet. They automatically apply their effects to an appropriate equipped weapon.
•  Lightning Shield now has a 50% chance to grant you a stack of Maelstrom Weapon when it deals damage to an enemy.
•  Flame Shock and  Frost Shock have their cooldowns shortened with your current Haste.

TALENTS

•  Boulderfist (talent) has been redesigned and renamed to Lashing Flames (Passive). Lava Lash now increases the damage of your Flame Shock on the target by 100% for 12 sec.
•  Landslide (talent) has been redesigned and renamed to Stormfury (Passive). Each time Windfury Weapon activates, the cooldown of Stormstrike is reduced by 1 sec.
• Hailstorm (talent) renamed to Cycle of the Elements.
•  Searing Assault (talent) redesigned and renamed to Hailstorm (Passive). Each Stack of Maelstrom Weapon consumed increases the damage of your next Frost Shock by 50%, and causes your next Frost Shock to hit 1 additional target per stack of Maelstrom Weapon consumed. Maximum 5 stacks.
•  Overcharge (talent) redesigned and renamed to Fire Nova. 15 sec cooldown. Cause all of your Flame Shocks to erupt in flames, dealing Fire Damage to up to 6 targets near your Flame Shock Targets.

The above changes to Enhancement Shaman are a lot to take in, but we feel that the combined list of changes will make your abilities feel like they have a purpose and interact with your toolkit in meaningful ways instead of just dealing damage.