Just wondering will each faction have its own exclusive classes? or different?

As the Dragon Knight class was introduced in last Octobers press event, the starting area was in Morrowind? and other Press invitees tried a Dunmer Templar starting in Bleakrock, Skyrim (all in the Ebon Heart area)

Seems ZOS are classifying classes/roles as "Dragon Knight" and "Templar" I'm sure there are more, would they be Faction specific?

Doubtful, but unknown I think.