For now only Trolls, because there was interest in that:
Troll:
+2 Constitution
Size: Medium
Speed: 30 feet
Languages: Zandali and Common
Darkvision 60 feet
Trolls are proficient in the Acrobatics skill
Rapid Healing: Add your Constitution modifier to every Hit Dice spent to heal Hit Points during a Short Rest
Subraces:
Zandalari:
+1 Intelligence
Zandalari are proficient in the History and Religion skills
Forest Trolls:
+1 Strength
Forest Trolls are proficient in the Survival skill
As long as a Forest Troll spends at least 8 hours of a day in direct sunlight they count as having consumed half a ration during that day
Jungle Troll:
+1 Dexterity
Jungle Trolls are proficient in the Survival and Athletics skills
Ice Trolls:
+1 Strength
Ice Trolls have Cold Resistance and Advantage on saves caused by effects that deal Cold damage or are based on coldness
Sand Troll:
+1 Dexterity
Sand Trolls require half as much water each day as normal
Sand Trolls have Advantage on saves against heat (but not out-right fire) based spells and effects.
