User blog comment:G0LD3NF1RE/E3 Elder Scrolls Online Roundup/@comment-89.77.54.47-20130627081949/@comment-195.243.212.3-20130704105709

"from what I know Xbox One will be Pay to Play because T.E.S.: Online is an online game and xbox uses memberships in order to play online. PC and PS4 are unknown."

PS4 - PSN requiered for playing online. (50 bucks a year)