The fact that they're getting a strong spotlight on the official announcement makes me feel their exclusion is pretty unlikely.
With Ardlings it's two birds, one stone, you get Aasimar and animalistic races in one. They basically split Aasimar into two races, more human looking Aasimar and more beastially Ardling.
But for the love of the Gods, come up with a cooler name then Ardlings, it sounds too close to Lardlings.
Hill Dwarves no longer have subraces (excluding Duergar), but Elves still have them with Drow, High, and Wild because they are far more then just mild appearance and cultural differences.
So it appears there will be High Elves, Drow, Wild Elves, Orcs, Humans, Halflings, Gnomes (or perhaps Rock Gnomes and Forest Gnomes), Dwarves and I assume Dragonborn (one race or Gem, Chromatic, and Metallic,?)
Plus hybrid options.
Background appears to be a mix of personal history, occuptation, and culture.
They should rename any feat that appears in the 5e PHB to avoid confusion.
No mention of the SRD, but if this stuff isn't added to the SRD, it risks splintering the fandom as third party publishers are stuck with 5e and unability to particapate in One D&D (which feels like a call out to the One Ring, as in One Edition to Bind them).
Its was pretty b****y to blatantly rip off Pathfinder 2e's power source based spell lists. I also love that power source matters, although the bouncing back and forth between Primal being a power source and absorded into Divine Magic.
It also feels closer abit to 4e.
Just so much to chew on already.