The Elder Scrolls Online developer Zenimax Online has revealed in a new FAQ that the PC/Mac OS, Xbox One and PlayStation 4 versions of the free-to-play MMO would have their own servers.
According to the "The megaserver technology featured in The Elder Scrolls Online will allow PC (Windows OS) players and Mac players to play together. Xbox One players will play on their own megaserver as will PlayStation 4 players.",
Neither the Xbox One or PlayStation 4 versions will truly be free-to-play, however, as both consoles will require a subscription for online play; Xbox Live Gold for the Xbox One and PlayStation Plus for the PlayStation 4.