Blizzard detailed some smaller changes coming to Enhancement Shamans in the next DF Beta build.

Enh Shaman (Source)

Enhancement Shaman,

Some minor changes coming in your next build:

Feral Lunge has moved to a spot below Windfury Weapon.

Windfury Totem is once again 20%.

Swirling Maelstrom has been lowered from 2 stacks of Maelstrom Weapon, down to 1, however the tooltip has been clarified now grants 1 stack of Maelstrom Weapon per Fire Nova eruption.

Crash Lightning has had some significant adjustments:

Crash Lightning cooldown increased from 9 to 12 seconds.

Crash Lightning’s buff from hitting 2 or more targets has increased from 10 to 12 seconds.

Ice Strike can now also cause the bonus damage from Crash Lightning.

The initial damage, as well as the bonus damage from Stormstrike, Lava Lash, and Ice Strike has been increased.

The initial damage as well as the bonus damage from Stormstrike, Lava Lash, and Ice Strike now deals reduced damage when you are fighting more than 6 targets.