Hi All, we are aware of this issue and are working to resolve. It seems like Xbox is the only platform impacted at the moment. We will update once we have more information.
Ah, tradition! ♥ The entire reason I came to the forums so many, many years ago, was because the game didn't work. Some things never change; welcome to the DAY AFTER RELEASE party, where everyone comes to hang out on the forums together while they wait to play the new game content. Since it's also summer solstice today, someone should break out the Rum also... (Xbox here too, by the way.)
The issues affecting the Xbox servers have now been resolved. For this reason we will be closing this thread to future comments. If you still have any login issues, please go ahead and start a new thread in the Xbox Support forum.