» Sun Feb 16, 2014 9:29 pm
Once your Ebonheart character hits level 50 they will have the option to travel to either of the other two faction territories in what is called 50+ and 50++ content.
You will not be playing with any members of the other alliances, but be in a special level-scaled instance where you'll find other members of your own alliance. You'll be able to play through most of the quests, but not repeat the main quest or the fighters/mages guild quests. You'll also be able to gather resources and sky-shards, so post-50 offers still more content and progression, which is nice.
So short answer, yes, but it's more complicated than just running over to Hammerfell whenever you like.
You CAN of course go back to your first alliances territory whenever you like. You are not switching alliances, just travelling their lands.