Players should play Horde and Alliance this expansion - Polygon

Battle for Azeroth seeks to harness player passion by pitting the two factions against each other more than ever before. But instead of loyally choosing a side, the best way to play Battle for Azeroth is with both a Horde and Alliance character.

World of Warcraft®: The War Within™

World of Warcraft Will Allow Horde and Alliance Players to Play Together at Last - IGN

How World of Warcraft Was Made: The Definitive Inside Story of Nearly 20 Years of Development

Polygon BFA Interview - The Future of the Alliance and Horde - Wowhead News

World of Warcraft: Dragonflight will add playable and rideable dragons

Exploring Bastion with Polygon, Featuring Steve Danuser and Johnny Cash - Wowhead News

World of Warcraft: Battle for Azeroth Preview - Eight Reasons To Be Excited For The Upcoming Expansion - Game Informer

Will these models be reworked too in WoD? : r/wow

Eye Changes for Death Knights and Elves Coming in Visions of N'zoth : r/wow