Maintenance for the week of March 25:
• [COMPLETE] ESO Store and Account System for maintenance – March 28, 9:00AM EDT (13:00 UTC) - 12:00PM EDT (16:00 UTC)
Why would that matter at all?
You're still picking your alliance at the beginning and starting from that alliance.
There's been rumors that with One Tamriel there will not longer be "alliances" for the PVE portion of the game, so a lot of people have been speculating on that.