We now have a full list of class changes in Dragonflight Alpha Build 44707, which includes some tuning to Evokers and Hunters and new Shaman Talents.
Class ToolsBloodTalentsFrostTalentsUnholyTalents
Specialization (1)
Festering Strike and Festering Wound damage increased by 10%.
Spells (1)
Pours dark energy into a dead target, reuniting spirit and body to allow the target to reenter battle with 60% health and at least 20% mana.