Camelot Unchained features a "Tri-Realm" System similar to ESO in terms. There will be 3 "realms" or 3 Factions in the game. The Arthurians, Tuatha De Denaan, and Vikings. Each faction will have its own territory and will fight over a majority of the map. Each faction will have unique races attached to them. Classes have not been announced yet and more information will come soon. Below I will link each of the Three Realms and you can see what Races each realm has available. The Arthurians: http://camelotunchained.com/v2/realms/arthurians/ Tuatha De Danaan: http://camelotunchained.com/v2/realms/tuatha-de-danann/ The Vikings: http://camelotunchained.com/v2/realms/vikings/
Hesitant to give any side love right now until we see the complete class design for each. I do love some of the race designs for each faction so I could find myself being happy any side.
I don't know such side I prefer yet in CU. I played Alb on live (Percival), Mid on Uthgard, and Hib on Genesis. I prefer the Mid lore in DAOC.