Bedrockgames
I post in the voice of Christopher Walken
What’s allowed by the Ancestry playtest packet is that your character’s parents can each be of whatever “species” () you want. If your character’s parents are the same “species,” you get all the mechanical features of that “species” and your character looks like a member of that “species.” If your character’s parents are of different “species,” you choose one of those “species” and get all of the mechanical features of that species, and none of the mechanical features of the other. You can mix and match cosmetic features of both “species” to create your character’s appearance, but they have no mechanical effect. Note also that “species” do not grant ability score increases at all, those now come from background.
For some reason I have been under the impression you get bonuses based on this (like you essentially get to mix and match the potential bonuses that would have existed across different Racial groups in D&D). So they are not giving any mechanical bonus for this?