There is no animation, no need to confirm if all the armor fits or clips, or to ensure there is faction balance with the racials. Some text, a few racial abilities, a bit of art in a book, and it’s done. Obviously it’s a lot easier to create a new race for players in D&D than in WoW. These last two are helping players recreate Pandaria. And then there is an insect race that stands upright, but otherwise are shaped like ants or mantises - in other words, just like the Mantid. The Hadozee is a simian race that’s bringing what are basically playable Hozen. There is a construct created by the Gnomes called the Autognome that is basically the Mechagnome.
Three of them seem very similar to races that already exist in World of Warcraft that are either already playable or players have wanted to play. This introduces six new playable races to D&D. There is a new Unearthed Arcana come out for Dungeons and Dragons, Travelers of the Multiverse.